regional institute-iii - forests...

Project Report

For

Govindpur Ph-II OCP (1.2 MTY)

(East Bokaro Coalfield)

Nominal Capacity : 1.2 MTY

Peak Capacity : 1.5 MTY

of

Central Coalfields Limited

DECEMBER’2009

(After CCL Board Approval on 23.12.2009)

Regional Institute-III

STRICTLY RESTRICTED FOR COMPANY USE ONLY

The information given in this report is not to be communicated either directly or indirectly to the press or any other person not holding Official position in the CIL/Government

Project Report for Govindpur Ph-II OCP, CCL CMPDI

C O N T E N T S

Sl.

No.

Chapter

No. Particulars Page No.

1. Summarised Data i - iii

2. List of Appendices iv

List of Drawings v

3. I Introduction Chapter I –1–2

4. II Location, Communication, Topography

& Climate Chapter II –1

5. III Geology Chapter – III-1–32

6. IV Marketability & Linkage Chapter – IV-1–2

7. V Main Technical Decisions for the Quarry Chapter – V-1–13

8. VI Pumping & Drainage Chapter – VI-1–4

9. VII Power Supply, Distribution,

Communication & Illumination Chapter – VII-1–11

10. VIII Coal Handling Plant Chapter – VIII-1–4

11. IX Railway Siding Chapter – IX-1

12. X Workshop Chapter – X-1 – 6

13. XI Manpower & Productivity Chapter – XI –1

14. XII Civil Construction Chapter – XII-1 – 2

15. XIII Water Supply & Sewerage Chapter – XIII-1–3

16. XIV Land Chapter – XIV-1

17. XV Energy Conservation Chapter – XV-1–3

18. XVI Economics Chapter – XVI -1–8

19. XVII Safety & Conservation Chapter – XVII -1– 6

20. XVIII Mine Closure & Environment Chapter – XVIII-1–13

21 Appendices 1X – 51X

22. Approval of CCL Board Annexure – I


Job No. 340721 Chapter-I-1

CHAPTER- I

1.0 INTRODUCTION:

Govindpur Phase-II OCP is located in Bokaro District of Jharkhand. It is

situated in the north western part of the East Bokaro Coalfield and it is a part

of the Kathara Area of Central Coalfields Limited. It lies adjoining to Sawang

OCP in the west. This Project Report envisages producing 1.2 MTY of ROM

power grade coal (Grade E) from “Geological Report on Coal Exploration

Govindpur North Block, East Bokaro Coalfield” prepared in Dec 2001 and the

area south of Bermo Seam incrop upto 200m depth line on Seam-VI floor in

the south. It is also envisaged to remove both coal and OB departmentally.

1.1 Draft PR of Govindpur Ph-II OCP (0.80 MTY)

Govindpur Opencast is a new mine and a Draft Project Report was prepared

in Feb 2008 to produce 0.8 MTY of coal from the Govindpur North sub-block

of Govindpur Block in East Bokaro Coalfield. Further reserves from an area to

the south of the incrop of Bermo seam has been added to the reserve of

Govindpur North Block and the capacity of the PR enhanced to 1.2 MTY.

1.2 Justification for locating the project in the forest area:

Karo group of seams is proposed to be exploited in Govindpur Ph II OCP. It is

a huge source of non-coking coal. This reserve of 19.53 MT non-coking coal

lies below the patches of forest and non-forest land. Hence, unless the forest

land above the coal seams is released, the coal seams cannot be exploited.

Mining being site specific it is not possible to divert the operations to non-

forest land.


Job No. 340721 Chapter-I-2

1.3 SCOPE OF THIS PROPOSAL

In this proposal of Govindpur Ph-II OCP (1.2 MTY):

a) The reserve from an area to the south of the incrop of Bermo seam was

added to the reserve of Govindpur North Block and the capacity of the PR

was increased to 1.2 MTY.

b) The option proposed in the present PR for Govindpur Ph-II OCP (1.2 MTY).

They are detailed as under:

OPTION-I

Coal Production Departmental

OB removal Departmental

Average Grade E

CHP Coal size (-) 100mm

Evacuation of

coal

Pipradih Railway

Siding

c) The proposal envisages for shovel dumper combination of mining.

d) Departmental Coal Handling Plant is proposed. Product size of (-) 100 mm

has been proposed.


Job No. 340721 Chapter-II -1

CHAPTER – II

2.0 LOCATION, COMMUNICATION, TOPOGRAPHY & CLIMATE

2.1 Location

The Govindpur North Block covering an area of 1.75 sq km lies between

latitudes 23o48'30" & 23o49'30" N and longitudes 85o51'15" & 85o52'45" E.

It is included in the Survey of India Toposheet No. 73E/13. The block lies

to the east of Sawang Colliery.

2.2 Communication

Govindpur Ph-II OCP is well connected by rail and road. The Gomoh-

Barkakana loop line of Eastern-Central Railway is about 2km from the

project. Bokaro Thermal Power Railway Station is the nearest railway

station. The OCP is about 80km from Hazaribagh. It is about 130km from

Ranchi via Ramgarh - Tenughat Dam road. The Sawang colliery was

connected to this Project by a seasonal causeway over Konar River, which

has been washed away. It is being proposed to construct a bridge over

Konar River at the same place.

2.3 Topography

The surface topography of the block is shown in Drg. No. RI-3/G/5707.

The block is usually slightly rolling with gentle southerly slope. The

maximum elevation is 318m above MSL and minimum 231 & 240m along

the flanks of Konar River & Montico Nala respectively. The Project lies in

the catchment area of Konar River & Montico Nala. The Konar river flows

in the south easterly direction and the Montico nala flows in the south

direction and joins the Konar River to the south of the block.

2.4 Climate

The area experiences semi to extreme climate with day temperature as

high as 450C during the summer, which falls down to around 50C in night

during winter. The rainy season lasts from mid June to mid September.


Job No. 340721 Chapter-III -1

Chapter-III

Geology of the Block

3.1.1 General:

The Gobindpur North OC Block with an area of 1.55 sq km is located in the NW

part of East Bokaro Coalfield, and is under the administrative control of Kathara

Area of CCL. The OC block is part of the area covered in Geological Report on

Gobindpur Block prepared by CMPDI in 1993 wherein it has been designated as

‘Gobindpur North Sub Block’. This is the northern most part of Gobindpur Block

where all the Karo group of seams are available. The Upper Karo group of seams

are thick with open cast potentiality while the lower Karo group seams have

underground potentiality only. The details given in this report are based on the

‘Geological Report on Coal Exploration, Govindpur North Block (Karo Group of

Seams)’ prepared by CMPDI in December, 2001.

3.1.2 Location:

The Gobindpur North OC Block covering an area of 1.55 sq km lies between the

latitudes 23 deg 48’ 30” to 23 deg 49’ 30”and longitudes 85 deg 51’ 15” to 85 deg

52’ 45” and is included in the Survey of India Toposheet no 73E/13. The block lies

to the immediate east of Sawang Colliery and some distance to the north of

Bokaro TPS of DVC.

3.1.3 Limits of Gobindpur North Block :

North: E-W trending Karharbari/Metamorphic contact

South: 200m depth line on floor of Seam-VI (south of Incrop of Bermo

Seam)

East: Surface trace of fault F16 (near Govindpur –Pichri fault)

West: Fault F7 (near Borrea Fault)



3.1.4 Communication :

The Gobindpur North OC Block is very well connected by rail and road. The

Gomoh-Barkakana loop line of EastCentral Railway passes about 2 km south of

the southern boundary of the block where Bokaro thermal Power railway station is

the nearest railway station. The Hazaribagh-Bermo metalled road passes close to

the northern and eastern sides of the block. The block is about 80km from

Hazaribagh and 2km from Kathara GM office.

3.1.5 Topography and Drainage :

The northern region is extremely hilly on account of outcrops of basal

Barakar Formation, which are hard, compact and resistant to weathering. The

southern region is slightly rolling with gentle southerly slope. The maximum

elevation in the hill region is 331 m above MSL and minimum is 231m and 240m

along the flanks of Konar River and Montico Nala respectively. The entire

Gobindpur North Block lies in the catchment area of the Konar River, which is a

perennial and major tributary of Damodar River.

3.1.6 Climate:

The block lies in tropical monsoon region with day temperature during summer

rising to as high as 45 0 C and fall down to around 5 0 C in winter. The rainy

season lasts from middle June to Mid September.

3.1.7 Previous Work :

The IBM (1959), NCDC (1965), CCL and CMPDI (1993 and 2001) explored the

area through drilling. The present PR is based on the latest GR of CMPDI on

Gobindpur North Block (December, 2001).

3.2.1 Drilling:

Drilling in the block was taken up by various agencies at various periods of time:



Table 3.1

Agency Phase BH Code No of BH drilled Meterage Drilled

(A)Within the Block

(i) NCDC NCBG 7 659.27m.

(ii) CMPDI CMEG 28 1988.25m

Total 34 2647.52m

The borehole density comes out to be 22 boreholes per sq km.

3.3.1 Geology of the Block

The Gobindpur North OC Block forms a segment of the northern limb of the main

synclinal basin of East Bokaro coalfield. It is located in the western part of the

coalfield in which rocks of Karharbari and Barakar formations are preserved in a

‘graben’ between ‘Borrea Fault’ in the west and ‘Govindpur-Pichri Fault’ in the

east. In this block, rocks belonging to the lower part of the Kargali-Karo stage are

lying over metamorphics. The generalized stratigraphic sequence is given below:

Table 3.2

Geological succession of Gobindpur North O/C Block

Age Formation Rock Types

Recent - Soil & Alluvium

Post Gondwana Intrusive Lamprophyres & Dolerite Dykes and sills

Barakar Coarse to medium grained arkosic sandstone,

carbonaceous shale and coal seams (Karo-V to XI)

Lower Permian

Karharbari Very Coarse grained sandstone, grits (sometimes

siliceous), pebble beds, carbonaceous shale and

coal seams(Karo-IV to I)

Upper

Carboniferous

Talchir Shales , shaly and fine grained sand stones,

occasional pebble beds.

Unconformity

Pre-Cambrian Granite-gneiss. Amphibolite and mica schist



3.3.2 Geological Structure

As mentioned earlier The Gobindpur North OC Block forms a segment of the

northern limb of the main synclinal basin of East Bokaro coalfield. Also that it is

located in a ‘graben’ between ‘Borrea Fault’ in the west and ‘Govindpur-Pichri

Fault’ in the east. In this block, other faults present in the Block are tabulated

below:

Table 3.3

Details of faults present in Gobindpur North O/C Block

Fault Strike

direction

Throw

direction

Throw

Amount

Evidences

F7 NS E 30-40m Omission of seam-VIII in Cmeg-53

F8 NW-SE SW 5-10m Floor level differences

F9 NNW-SSE E 5-10m Omission of seam in NCBG-7

F11 NNW-SSE E 30m Floor level differences

F12 NW-SE NW 10m Reduction in partings

F13 NW-SE NW 10-15m Floor level differences

3.4.1Sequence of coal seams

Following is the stratigraphic sequence of coal seams present in the block:

Table 3.4

Details of coal seams & partings, Gobindpur North O/C Block

Seam Thickness (m) Generalised range (m)

Full seam intersections

Minimum Maximum Soil 0.00 6.50 2-4

Strata above Seam-XI

12.57 NCBG-8

54.45 (CMEG-116)

30-40 4

Parting 4.48 7.95

Seam-X 7.45

(CMEG-112) 12.52

(NCBG-27) 7-8 7

Parting 0.36 5.87

Seam-IX 0.91

(NCBG-16) 3.79(CMEG-

112) 2-3 9

Parting 9.27 31.55



Seam Thickness (m) Generalised range (m)

Full seam intersections

Seam-VIII 20.38

(CMEG-113) 30.05

(CMEG-99) 22-23 12

Parting 10.17 14.57

Seam-VII-Top 0.69

(CMEG-110) 7.31

(NCBG-8) 3-4 22

Parting 0.31 3.82

Seam- VII-Bot 1.00

(CMEG-110) 4.38

(CMEG-65) 2-4 23

Parting 0.22 5.93

Seam-VI 0.40

(CMEG-46) 3.26

(CMEG-111) 2-3 21

Parting 27.58 48.70

Seam-V 0.62

(CMEG-36) 2.48

(CMEG-112) 1.5-2 20

Parting 19.52 32.62

Seam-IV 1.45

(CMEG-50) 3.70

(CMEG-42) 2-3 22

Parting 4.91 12.45

Seam-III 0.49

(CMEG-41) 3.30

(CMEG-78) 1.7-3 21

Parting 10.56 26.76

Seam-II 0.04

(CMEG-101) 0.51

(CMEG-108) 0.30-0.60 5

Parting 2.57 8.57

Seam-I 0.37

(CMEG-107) 0.61

(CMEG-101) 0.40-0.60 3

3.4.2 Description of seams

Gobindpur North OC Block is located in an area where only lower stage of Barakar

formation and Karharbaris are exposed. Therefore only Karo group of seams

starting from Karo-I to Karo-XI have been encountered in the boreholes. Bermo

seam and seams above it incrop further down dip to the south of the boundary of

the block.

Seam VIII is the thickest seam but is highly interbanded. Seam VII Top, VII Bottom

and VI form a packet of three distinctly identifiable horizons, which nearly merge

with each other at a few places in the block. Seam V, IV and III are comparatively

thin and are amenable to underground mining only. Seams II and I are very thin

and impersistent.



Due to their thickness and occurrence in shallower depth, the seams, Karo-VI and

above (upto seam-XI) have been identified for exploitation by open cast methods.

Although the coal seams in the block are of coking nature, their ash content is on

rather higher side. Therefore the grades of seams are given both on coking and

non-coking basis for areas where ash% is more than 35%.

3.4.2 Seam-XI

This is the top most seam of Karo Group in the block occurring 5.03m to 5.60 m

below Bermo Seam which incrops along the southern limit and 4.48m to 7.95m

above underlying Karo-X Seam. The Incrop of Seam-XI occurs in an E-W strike

length of 1.5 km. In the southern part of the block, it underlies Seam X/IX with a

parting of 23.47m (NCBK-02) to 24.60m (CMEK-95).

The details of borehole intersections of this seam are given below:

Table 3.5

Details of borehole intersections of Seam-XI in Govindpur North Block

Floor depth below G.L.

(a) Shallowest 14.88m (NCBG-8)

1

(b) Deepest 59.94m (CMEG-68)

F.R.L

(a)Highest 240.02m (CMEG-110)

2

(b)Lowest 217.00m (CMEG-68)

No. of BH intersections

(a) Unfaulted 5

(b) Faulted / Partially Faulted -

3

c) Burnt -

d)Incrop -



Thickness:

The thickness of Seam-XI generally varies from 1.70m (CMEG-97&-16) to 2.48m

(CMEG –112). However in western part in borehole no NCBG-7 the thickness of

the seam has further reduced to 1.22 m. The Thickness is around 2m in rest of the

area.

Roof and floor

The immediate roof of the seam is composed of alternate shale and sandstone,

shaly sand stone and occasionally sandy shale. Carbonaceous shale, shale and

sandy shale form the immediate floor of the seam.

Dirt Bands:

Table 3.6

Range of Dirt Bands in Seam-XI

Details Minimum Bh No CMEG-

Maximum Bh No CMEG-

Nos considered

Seam Thickness

1.70 99,116 2.48 112 11

i) Including dirt bands +NCB

1.70 99,116 2.48 112 11

ii) Including bands (I-30)

1.70 99,116 2.48 112 11

iii) Ex band 1.70 99,116 2.48 112 11 2)a..Dirt bands >0.05-0.30m A) Number - 110,113 1 110,113 2 B) Thickness

1) Individual 0.07 113 0.25 110 2 2) Aggregate 0.07 113 0.25 110 2

2) b Dirt bands 0.30-1.00m A) Number NIL NIL NIL NIL NIL B) Thickness

1) Individual NIL NIL NIL NIL NIL 2) Aggregate NIL NIL NIL NIL NIL

2) c Dirt bands >1.00m A) Number NIL NIL NIL NIL NIL B) Thickness

1) Individual NIL NIL NIL NIL NIL 2) Aggregate NIL NIL NIL NIL NIL

Note: NCB=non combustible bands



Effect of igneous Intrusion: Seam-XI has not been found to be affected by igneous

intrusion in any of the boreholes in the block.

Quality

Table 3.7

Quality characteristics of Seam-XI in Gobindpur North Block No. of BH considered = 5 Thickness Range

1.70 (CMEG-99, 116) to 2.48m (CMEG-, 112)

Proximate Analysis (as analysed basis) Ex band bcs In band M% 1.0 - 1.6 1.0-1.6 1.0-1.6 A% 25.2 – 36.1 29.1 – 36.1 30.9-37.4 VM% 18.1 –23.1 18.2 – 20.8 18.2 – 21.6 CV(K Cal/Kg) 5440 - 5820 5040 - 5620 5040 - 5380 UHV(K Cal/Kg)

3780 - 5257 3753 - 4719 3601 - 4498

W-I – W-IV W-III – W-IV W-IV – UG W-IV – UG

Grade (a)Coking ---

Range General

(W-IV) (W-IV) (W-IV) (W-IV)

D - E D - E D - E

Grade b) Non-Coking

Range General

(D) (D-E) (D-E)

Ultimate Analysis Unit coal basis As analysed

basis Ex band bcs I VM% 21.1 24.4 24.4-28.7 24.4-29.7 C% 56.38 87.85 H% 3.24 5.05 N% 1.16 S% 0.35 P% 0.107 CO2% 0.53 CV(K Cal/Kg) 8655 8330 8283 Other Tests CI - CT G SI 1



Grade: The above data indicates that the coal from Seam-XI is having low

moisture, medium volatile matter and medium to high ash content. The In-band

coking grade of the seam is ‘Ungraded’ to Washery grade-IV while the same as

per non-coking norms is E to D.

3.4.3 Seam-X

Seam –X occurs 4.48 m (CMEG-68) to 7.95m(NCBG-7) below Seam XI and

0.36m(NCBG-27) to 5.87m (CMEG-98) above underlying Karo-IX Seam.

The Incrop of Seam-X also occurs in an E-W strike length of 1.5 km in the

southern part of the block.


Table 3.8

Details of borehole intersections of Seam-X in Gobindpur North Block



1


F.R.L

(a)Highest 246.66m (NCBG-16)

2


No. of BH intersections 12

(a) Unfaulted 7

(b) Faulted / Partially Faulted 2/1

3

c) Burnt 1

d)Incrop 1

Thickness:

The thickness of Seam-X generally varies from 7.45m (CMEG-112) to 12.52m

(NCBG –27). Maximum thickness is found around borehole no NCBG-8 and

CMEG-70 in central part of the block. The thickness of the seam is around 7 to8m

in rest of the area.



However in one borehole (CMEG-64) in the western part shows a thickness of

11.27m which is an isolated case.

Roof and floor

The immediate roof of the seam is composed of shale and sandy shale and

occasionally alternate shale and sandstone. Sandy shale and occasionally sand

form the immediate floor of the seam.

Dirt Bands:

Table 3.9

Range of Dirt Bands in Seam-X


Maximum Bh No CMEG-

Nos considered

Seam Thickness

i)Including dirt bands +NCB

7.45 112 11.27 64 10

ii)Including bands(I-30)

7.27 39 10.93 64 10

iii)Ex band 7.27 39 10.65 64 10 2)a..Dirt bands >0.05-0.30m ( No band in 2 boreholes out of 9 analysed) A) Number 1 64,69,98 5 70 7 B) Thickness

1)Individual 0.07 70,95 0.29 99 7 2)Aggregate 0.11 68 0.77 70 7

2)b..Dirt bands 0.30-1.00m A) Number 1 39,113 2 98 3 B) Thickness

1)Individual 0.32 98 0.40 116 3 2)Aggregate 038 39 0.65 98 3

Non –combustible bands A) Number 1 113 2 64 2 B) Aggregate

Thickness 0.10 113 0.34 64 2


Effect of igneous Intrusion: Seam-XI has been found to be affected by igneous

intrusion in only one of the boreholes (CMEG- (99) in the block where top section

of the seam has been devolatalised.



Quality

Table 3.10

Quality characteristics of Seam-X in Gobindpur North Block No. of BH considered = 7 Thickness Range

7.19 (CMEG-99) to 11.27m (CMEG-64)

Proximate Analysis(as analysed basis) Ex band bcs In band M% 0.9 – 3.9 0.9 – 3.9 0.8 – 3.9 A% 20.6 – 32.5 26.3 – 34.3 28.3-38.1 VM% 21.0-24.4 19.1 – 22.1 19.1 – 21.0 CV (K Cal/Kg) 5080 - 5740 5190 - 5420 4820 - 5420 UHV (K Cal/Kg)

4015 - 5008 3960 - 4629 3449 - 4607

W-I – W-IV W-III – W-IV W-IV – UG

Grade (a)Coking ---

Range General

(W-IV) (W-IV) (W-IV)

D - E D - E D - E

Grade b)Non-Coking

Range General (D) (D-E) (D-E) Ultimate Analysis

Unit coal basis As analysed basis Ex band bcs I

VM% - 27.2 – 29.6 25.0-28.0 25.4-28.6 C% 55.75 87.88 H% 3.25 5.15 N% 1.18 S% 0.34 P% 0.116 CO2% 0.62 CV(K Cal/Kg) 8119-8613 8171-8521 8285-8703 Other Tests CI - CT G SI 1



Grade: The above data indicates that the coal from Seam-X is having low

moisture, medium volatile matter and medium to high ash content.The In-band



Beneficiation

Washability studies were carried out earlier on the coal cores from NCBG-

16, the details of which are as follows:

Table 3.11

Screen Analysis

13mm - 0.4mm (-) 0.4mm

Cleans at 1.50 Overall

Ash%

(calculated) Wt% Ash% Wt% Ash% Wt% Ash%

36.8% 97.9 37.1 2.1 25.0 29.0 26.6

Some more such studies have been carried out in adjoining Govindpur Block,

details of which are available in the G.R. of the block.

3.4.4 Seam-IX

Seam –IX occurs 0.77 m (CMEG-113) to 5.87m (CMEG-99) below Seam X and

9.27m (NCBG-7) to 25.29m (CMEG-98) above underlying Karo-VIII Seam. The

seam is almost merged with Seam-VIII around borehole CMEG-113.

The Incrop of Seam-X also occurs in an E-W strike length of 1.5 km. about 40 to

50m north of incrop of Seam X in the block.


Table 3.12

Details of borehole intersections of Seam-IX in Govindpur North Block



1




F.R.L


2



(a) Unfaulted 7

(b) Faulted / Partially Faulted 2/nil

3

c) Burnt nil

d)Incrop 2

Thickness:

The thickness of Seam-IX generally varies from less than a meter (0.91 in NCBG –

16 only) to 3.79m (CMEG –112). Maximum thickness is found around borehole

no CMEG-112 in the central part and in the eastern most part (CMEG-38) of the

block. The thickness of the seam is around 2m in larger part of the block.

Roof and floor

The immediate roof of the seam is composed of carbonaceous shale followed by

fine to medium grained sandstone and occasionally sandy shale/shaly sandstone.

The floor of the seam is composed of shaly sandstone and sandy shale and

occasionally alternate shale and sandstone.

Dirt Bands:

Table 3.13

Range of Dirt Bands in Seam-IX

Details Minimum Bh No

CMEG-

Maximum Bh No

CMEG-

Nos

considered

Seam

Thickness

1.35 39 3.79 112 13

i)Including

dirt bands

+NCB

1.35 39 3.59 112 13



ii)Including

bands(I-30)

1.35 39 3.29 112 13

iii)Ex band

2)a..Dirt bands >0.05-0.30m ( No band in 5 boreholes out of 13 full seam analysed)

A) Number 1 39,70,113 2 64,98,112 8

B) Thickness

1)Individual 0.05 70,113 0.21 112 8

2)Aggregate 0.05 70,113 0.30 112 8

2)b..Dirt bands 0.30-1.00m

A) Number 1 40 1 40 1

B) Thickness

1)Individual 0.34 40 0.34 40 1

2)Aggregate 0.34 40 0.34 40 1

Non –combustible bands

A) Number 1 39,40,64 1 39,40,64 4

B) Aggregate

Thickness

0.06 64 0.20 112 4


Effect of igneous Intrusion: Seam-XI has not been found to be affected by

igneous intrusion in any of the boreholes

Quality

Table 3.14

Quality characteristics of Seam-IX in Gobindpur North Block

No. of BH considered = 9

Thickness

Range

0.91m (NCBG-16)

to

3.79m (CMEG-112)



Proximate Analysis (as analysed basis)

Ex band bcs In band

M% 0.9 – 1.3 0.8 – 1.5 0.9 – 1.5

A% 22.5 – 31.5 22.5 – 38.6 23.6-44.8

VM% 20.1-25.4 17.8 – 22.6 17.2 – 22.6

UHV

(K Cal/Kg)

4371 - 5671 3463 - 5671 2511 - 5491

W-II – W-IV W-II – UG W-IV – UG

Grade

(a) Coking ---

Range

General

(W-III – W-IV) (W-III – W-IV) (W-IV-UG)

B-D B - E C-F

Grade

b) Non-Coking

Range

General (C-D) (D-E) (D-E)

Ultimate Analysis

Unit coal basis As analysed

basis Ex band bcs I

VM% 22.6 25.0 – 31.4 25.0-29.5 25.0-28.0

C% 58.43 88.26 61.47 88.69

H% 3.32-3.55 5.09-6.10

N% 1.10-1.15

S% 0.45-0.55

P% 0.08

CO2% 0.51-0.58

CV(K Cal/Kg) 8410-8556 8407-8589 8296-8543

Other Tests

CI -

CT F-G

SI 1



Grade: The above data indicates that the coal from Seam-IX is having low

moisture, medium volatile matter and medium to high ash content. The In-band



3.4.5 Seam-VIII

This is the thickest as well as most prospective seam of Karo Group in the block. It

lies 9.27m (NCBG-7) to 31.55 m (CMEK-52) below Seam IX and 4.02m (NCBG-

12) to 14.57m(CMEK-113) above underlying Karo-VII Top Seam. This is a highly

banded seam and has been intersected in 31 boreholes. Details of borehole

intersections of this seam are given below:

Table 3.15

Details of borehole intersections of Seam-VIII in Gobindpur North Block


(a) Shallowest 8.10m (CMEG-36, 102)

1


F.R.L


2



(a) Unfaulted 20

(b) Faulted / Partially Faulted 1/3

3

c) Burnt 1

d) Incrop 2

Incrop: The incrop of Seam-VIII also occurs in an E-W strike length of 1.5 km.

running parallel to and at about 40 to 50m north of incrop of Seam IX in the block.

Thickness:

The thickness of Seam-VIII varies from 20.38m (CMEG-113) to 30.05m (CMEG –

99). However it is generally around 22m to 23m in the area.



Roof and floor

The immediate roof of the seam VIII is composed of carbonaceous shale followed

by medium to fine grained sandstone at top. The floor generally comprises of

sandy shale and shaly sand stone and occasionally medium to fine grained

sandstone.

Dirt Bands:

As evident from the band-by-band analysis of the seam in 16 boreholes the Seam

VIII contains large no of combustible and non-combustible bands.

Table 3.16

Range of Dirt Bands in Seam-VIII


Maximum Bh No CMEG-

Nos considered

Seam Thickness i)Including dirt bands +NCB

20.38 113 30.05 99 16

ii)Including bands(I-30)

15.28 40 26.27 52 16

iii)Ex band 12.18 40 16.66 52 16 2)a..Dirt bands >0.05-0.30m NIL in two boreholes. (CMEG-40 & 43) A) Number 1 38,41,42,99 11 52 14 B) Thickness

1)Individual 0.07 52,113 0.30 107,109 14 2)Aggregate 0.10 99 1.65 52 14

2)b..Dirt bands 0.30-1.00m NIL in one borehole. CMEG-99 A) Number 1 43,63,98 5 52 14 B) Thickness

1)Individual 0.32 52 0.99 41 14 2)Aggregate 0.37 43 2.57 70 14

2)c..Dirt bands >1.00m NIL in 8 boreholes (CMEG-38,52,63,64,107,110,113,116) A) Number 1 41,70,99,109 5 40 14 B) Thickness

1)Individual 1.04 42 3,27 40 14 2)Aggregate 1.07 70 9.04 40 14




Effect of igneous Intrusion:

Seam-VIII has been found to be affected by igneous intrusion in two

boreholes (CMEG-70 & 112) in the block. In CMEG-70 only the top most 0.11m

section of the seam has been devolatilised, while in CMEG-112 this seam as well

as seams below it has been partly burnt.

Quality

Table 3.17

Quality characteristics of Seam-VIII in Gobindpur North Block No. of BH considered = 15 Thickness Range

20.38 (CMEG-112) to 30.05m (CMEG-99)

Proximate Analysis(as analysed basis) Ex band bcs In band M% 0.8 - 1.2 0.8-1.3 0.7-1.4 A% 27.7 – 30.2 27.5 – 39.4 33.2 – 43.9 VM% 18.6 –22.0 18.3 – 20.5 16.2 – 18.8 CV(K Cal/Kg) 5480 - 5920 5350 - 5540 4030 - 4860 UHV(K Cal/Kg)

4567 - 4926 2325 - 4622 2731-3891

W-III – W-IV UG – W-IV UG-W-IV

Grade (a)Coking ---

Range General

(W-IV) (W-IV) (W-IV)

D D - F E_F

Grade b)Non-Coking

Range General (D) (D) (F) Ultimate Analysis


VM% 23.4-28.3 23.4 – 27.4 23.2-26.6 C% 60.18 88.53 H% 3.43 5.06 N% 1.00 S% 0.40 P% -



CO2% 0.5 CV (K Cal/Kg) 8287-8665 8291-8483 7916-8760 Other Tests CI - CT D/E SI 1

Grade:

The above data indicates that the coal from Seam-VIII is having low moisture,

medium volatile matter and medium to high ash content. The In-band coking grade

of the seam is ‘Ungraded’ to Washery grade-IV while the same as per non-coking

norms is F to E.

Beneficiation

Washability studies were carried out earlier on the coal cores from NCBG-16 as

well as that from a borehole from borehole NCBG-11 from adjoining block, the

details of which are as follows:

Table 3.18

Screen Analysis

13mm - 0.4mm (-) 0.4mm

Cleans at 1.50

B.H.No.

Raw coal

Ash%

Wt% Ash% Wt% Ash% Wt% Ash%

NCBG-16 45.2 98.3 45.5 1.7 30.4 21.3 18.36

NCBG-11 38.7 97.0 39.1 3.0 25.2 31.9 17.6

Some more such studies have been carried out on coal core from borehole no.

CMEG-82 and in adjoining Govindpur Block, details of which are available in the

G.R. of the block.

3.4.6 Seam-VII Top

Seam-VII Top occurs 10.17 m (CMEG-98) to 14.57m(CMEG-113) below Seam

VIII and 0.31m (CMEG -53) to 3.82m (CMEG-113) above underlying Seam-VII

Bottom




Table 3.19

Details of borehole intersections of Seam-VII Top in Gobindpur North Block


(a) Shallowest 5.43m (CMEG-78)

1

(b) Deepest CM-99-123.12M 126.45m (CMEG-112)

F.R.L


2



(a) Unfaulted 19

(b) Faulted / Partially Faulted 1/-

3

c) Burnt 1

d)Incrop 1

Incrop

The Incrop of Seam-VII Top is available in an E-W strike from 40 to 50m north of

Seam-VIII incrop on ground. But incrops of Seam-VII Top, VII Bottom and VI occur

in close proximity to each other due to existence of very thin parting between

them.

Thickness:

The thickness of Seam-VII Top is very erratic due to development of bands near

the roof and floor and their selective inclusion/exclusion from the seam thickness

depending on the economic viability. Thickness varies from 0.69m (CMEG-110) in

the south-western part to 7.38m (CMEG-50) in the north-eastern part. But

generally the thickness lies between 2 to 3m in remaining parts.



Roof and floor

The immediate roof of Seam-VII Top is generally carbonaceous shale and

occasionally grey shale/sandy shale topped by fine-grained sandstone and

occasionally alternate shale and sandstone. Grey shale and sandy shale generally

constitute the immediate floor of the seam.

Dirt Bands:

Table 3.20

Range of Dirt Bands in Seam-VII Top


CMEG-

Maximum Bh No

CMEG-

Nos

considered

Seam

Thickness

0.69m

110

2.38

98

i)Including

dirt bands

+NCB

0.50 63 2.38 98 30

ii)Including

bands(I-30)

0.50 63 2.38 50 30

iii)Ex band 0.50 63 2.31 52 30

2)a..Dirt bands >0.05-0.30m - NIL in 23 boreholes out of 30 analysed for full thickness

A) Number 1 52 1 98 7

B) Thickness

1)Individual 0.12 52 0.30 98 7

2)Aggregate 0.12 52 1.65 98 7


Effect of igneous Intrusion:

Seam-VIII has been found to be completely burnt by igneous intrusion in

only one borehole (CMEG-112) in the block.



Quality

Table 3.21

Quality characteristics of Seam-VII Top in Gobindpur North Block No. of BH considered = 22 Thickness Range

0.69m (CMEG-110) to 2.31m (CMEG-50)

Proximate Analysis (as analysed basis) Ex band bcs In band M% 0.5 – 5.2 0.5 – 5.2 0.5 – 5.2 A% 22.6 – 34.4 26.3– 42.2 27.7-46.6 VM% 17.8-26.7 17.8-26.7 17.8-26.7 CV(K Cal/Kg) 4890 - 6000 4890 - 6000 4890 - 6000 UHV(K Cal/Kg)

3987- 5712 2911 - 5177 2304-4981

W-II – W-IV W-III – UG W-III – UG

Grade (a)Coking ---

Range General

(W-II-W-IV) (W-III-UG) (W-III-UG)

D D - F E_F

Grade b)Non-Coking

Range General

(D) (D) (F)


basis Ex band bcs I VM% 18.8 20.9-28.7 22.9– 29.9 22.9-29.9 C% 54.44 88.81 H% 3.02 4.03 N% 0.90 S% 0.43 P% - CO2% 0.58 CV(K Cal/Kg) 7995-8682 7995-8682 7995-8682 Other Tests CI - CT D SI 1



Grade: The In-band coking grade of the Seam-VII Top is ‘Ungraded’ to Washery

grade-III while the same as per non-coking norms is F to G.

3.4.7 Seam-VII Bottom

Seam-VII Bottom occurs 0.31 m (CMEG-53) to 3.82m(CMEG-112) below Seam

VII Top and 0.22m (CMEG -50) to 5.93m (CMEG-101) above underlying Seam-VI.

The Seam-VII Bottom is almost merged with Seam-VII-Top in borehole CMEG-36,

53 and 78 with a parting of grey shale measuring 0.70, 0.31 and 0.52m

respectively. The seam is almost merged with Seam –VI in borehole CMEG-50

where the parting is only 0.22m.

.

The details of borehole intersections of this seam is given below:

Table 3.22

Details of borehole intersections of Seam-VII Bottom in Gobindpur North Block



1


F.R.L


2



(a) Unfaulted 19

(b) Faulted / Partially Faulted 1/-

3

c) Burnt 2

d) Incrop 1

Incrop

The incrop of Seam-VII Bottom is available in an E-W strike on ground and runs in

close proximity to incrops of Seam-VII Top and VI due to existence of very thin

parting between them.



Thickness:

The thickness of Seam-VII Bottom varies from 1.00m (CMEG-110) in the south-

western part to 4.38m (CMEG-65). But generally the thickness remains around 2-

4m in remaining parts.

Roof and floor

The immediate roof of Seam-VII Bottom is generally shale/ sandy shale and

occasionally sandstone. The immediate floor is generally shaly sandstone or fine

to medium grained sandstone.

Dirt Bands:

Table 3.23

Range of Dirt Bands in Seam-VII Bottom


CMEG-

Maximum Bh No

CMEG-

Nos

considered

Seam

Thickness

i)Including

dirt bands

+NCB

1.00 110 5.25 95 23

ii)Including

bands(I-30)

1.00 110 5.25 95 23

iii)Ex band 1.00 110 5.25 95 23

Effect of Igneous Intrusives :

The seam is partly burnt in CMEG-42 and 113 and is completely burnt in Seam-VII

Bottom CMEG- 112.

Quality



Table 3.24

Quality characteristics of Seam-VII Bottom in Gobin dpur North Block No. of BH considered = 27 Thickness Range

1.00m (CMEG-110) to 4.38m (CMEG-65)

Proximate Analysis (as analysed basis) Ex band bcs In band M% 0.6 – 3.3 0.5 – 3.0 0.5 – 2.4 A% 24.3 – 39.2 27.4– 44.0 26.8-58.6 VM% 17.8-22.3 17.0-21.5 17.8-21.5 CV(K Cal/Kg) 5110-6930 4280 - 5610 2860 - 5610 UHV(K Cal/Kg)

5106-3904 4746-2704 4525-2048

W-III – UG W-III – UG W-III – UG

Grade (a)Coking ---

Range General

(W-III-W-IV)

(W-IV)

(UG)

C-E D - F D-UG

Grade b)Non-Coking

Range

General (D) (D-E) (E-F)


basis Ex band bcs I VM% - 20.9-28.7 22.9– 29.9 22.9-29.9 C% 57.87-58.96 88.12-88.39 H% 3.29-3.37 5.03-5.04 N% 0.92-1.15 S% 0.31-0.33 P% 0.123-0.126 CO2% 0.16-0.57 CV(K Cal/Kg) 5610-6930 7717-8598 7717-8598 7916-8598 Other Tests CI - CT F-D SI 1 Ash fusion Temp deg C IDT HT FT >1400 >1400 >1400



Grade: The In-band coking grade of the Seam-VII Top is ‘Ungraded’ to Washery

grade-III while the same as per non-coking norms is ‘Ungraded’ to D.

3.4.8 Seam-VI

Seam-VI occurs 0.22m (CMEG -50) to 5.93m (CMEG-101) below Seam VII

Bottom and 57.58m (CMEG -109) to 48.70m (CMEG-52) above underlying Seam-

V. The Seam-VI is almost merged with Seam-VII-Bottom in borehole CMEG-36

and 50 with a parting of grey shale measuring less than 1m.

The details of borehole intersections of this seam is given below:

Table 3.25

Details of borehole intersections of Seam-VI in Gobindpur North Block



1


F.R.L


2



(a) Unfaulted 15

(b) Faulted / Partially Faulted 4 / -

3

c) Burnt 3

d)Incrop 1

Incrop

Due to existence of very thin parting between them, the incrops of Seam-VI and

Seam-VII Bottom run in close proximity to each other and are available in an E-W

strike on ground.



Thickness:

The thickness of Seam-VII Bottom varies from 0.40m (CMEG-46 to 3.26m

(CMEG-111). In the west central part, around BH no CMEG-46, 101,65, 42 and 99

the seam thickness has been reduced to 1m or less due to development of

carbonaceous bands. But generally the thickness remains around 2 to3m in most

of the area.

Roof and floor

The immediate roof of Seam-VII Bottom is generally shaly sandstone or fine to

medium grained sandstone. The immediate floor is generally sandy shale, shaly

sandstone and occasionally fine grained sandstone.

Dirt Bands:

Table 3.26

Range of Dirt Bands in Seam-VI


CMEG-

Maximum Bh No

CMEG-

Nos

considered

Seam

Thickness

i)Including

dirt bands

+NCB

0.45 36 3.26 111 21

ii)Including

bands(I-

100)

0.45 36 3.26 111 21

iii)Ex band 0.45 36 3.26 111 21

2)a..Dirt bands <1m NIL in 13 boreholes out of 28 boreholes

A) Number nil 36,37,41,43,46,103,109,115 3 52 15

B)

Thickness

1)Individual 0.09 107 0.92 63 15



2)Aggregate 0.14 123 0.72 52 15

2)b..Dirt bands >1m

A) Number nil nil nil nil 15

B)

Thickness

nil

1)Individual nil nil nil nil 15

2)Aggregate nil nil nil nil 15

3) Non-combustible Bands

A) Number 1 54,111 1 54,111 15

B) Thickness

1)Individual 0.05 54 0.06 111 15

2)Aggregate 0.05 54 0.06 111 15


Effect of Igneous Intrusive:

The seam is completely burnt in and around CMEG-42, 65 and 112.

Quality

Table 3.27

Quality characteristics of Seam-VI in Gobindpur North Block

No. of BH considered = 21 Thickness Range

0.40m (CMEG-46) to 3.26m (CMEG-111)

Proximate Analysis (as analysed basis) Ex band bcs In band M% 0.9 – 1.3 0.6 – 1.3 0.5 – 1.3 A% 28.3 – 30.7 29.5– 43.8 24.2-47.8 VM% 19.4 15.8-20.0 15.2-20.4 CV(K Cal/Kg) 5760 4250 - 5760 4110-4950 UHV(K Cal/Kg)

3040-4870 2745-4691 2193-4691

W-IV UG UG

Grade (a)Coking ---

Range General

(W-IV)

(UG)

(UG)

Grade



D E-G D-F

b)Non-Coking Range

General (D) (E-F) (E-F) Ultimate Analysis


VM% - 24.4-27.1 22.4– 28.3 21.5-28.3 C% - 88.12-88.39 H% - 5.03-5.04 N% - S% - P% - CO2% - CV(K Cal/Kg) - 8655 8336-9236 8283-8812 Other Tests CI - CT - SI - Ash fusion Temp deg C IDT HT FT >1400 >1400 >1400

Grade: The In-band coking grade of the Seam-VI is ‘Ungraded’ while the same

as per non-coking norms is E to F.

3.5.1 Geological coal reserves

The total geological reserves of coal in larger Govindpur block (as per March 1993

G.R. of CMPDI) are tabulated below:

Table 3.28

Seam–wise & Sector wise net ‘proved’ coal reserves

in Gobindpur block (as per GR, 1993)

Seam Proved Indicated Total Jarangdih 9.282 9.282 Jarangdih New 5.627 5.627 Jarangdih 6' 3.147 3.147 Jarangdih 'A' 2.530 2.530



Seam Proved Indicated Total Sawang 'C' 5.815 5.815 Kathara 7.636 3.814 11.450 Uchitdih 'A' 1.909 1.053 2.962 Kargali Top 22.119 6.127 28.246 Kargali Bot 19.109 9.718 28.827 Bermo 44.250 8.529 52.779 Karo-XI 4.545 4.190 8.735 Karo-X 18.233 16.762 34.995 Karo-IX 4.954 4.277 9.231 Karo-VIII 50.772 37.422 88.194 Karo-VII/VI 5.739 6.107 11.846 Karo-IV 5.478 6.500 11.978 Karo-III 4.968 6.000 10.968

Total 216.113 110.499 326.612

The area of that block was much larger than ‘Gobindpur Phase-II OC’ and

extended from incrop of Seam-III in the north, to the Borrea Fault and Railway line

in the south, and from Borrea Fault in the west, to Govindpur - Pichri Fault in the

East. The coal seams covered in the GR of 1993, included, in addition to Karo

group of seams, upper seams from Bermo to Jarangdih seams also.

In the year 2001 another geological report of Gobindpur North block,

encompassing only Karo Group of Seams and covering area lying to the north of

Bermo Seam incrop - upto Seam-III incrop in the north, was prepared by CMPDI.

In that area - only Seams XI, X, IX, VIII, VII-Top & VII Bottom and VI were found to

be having quarriable potentiality while the lower seams being thin and occurring

after thick parting interval were not considered for OC mining. The Sector wise net

in situ quarriable reserve in the entire Gobindpur North block (Sectors- A, B & C)

have been summarised below.



Table 3.29

Seam–wise & Sector wise net ‘proved’ coal reserves

in Gobindpur North block (G.R. 2001)

(Figures in Tonnes)

Av.Grade SEAMS SECT-A SECT-B SECT-C

SEAM

TOTAL Coking Non Coking

XI 73440 378754 298467 750661 W-IV E

X 363168 1499427 1556928 3419523 W-IV D

IX 118296 311447 372960 802703 W-IV D

VIII 2274192 4963433 4495212 11732837 Ungraded F

VII 757789 1986057 1523060 4266906 W-III E

VI 379195 637740 776628 1793563 Ungraded F

TOTAL 3966080 9,776,858 9,023,255 22766193 Ungraded

The limits of the various sectors in the GR are defined as follows:

Sector-A: Area lying between eastern bank of Konar River in the west,

fault F7 in the east, Seam VI incrop in the north and incrop of Bermo Seam

in the south. This sector is highly disturbed by a number of sets of faults .

The seam incrops are also not in continuity with adjoining Sector -B of

OC and have shifted to a considerable distance southward where coal has

already been quarried out . Therefore this sector has not been included in

the present OC.

Sector-B: Area lying between fault F7 in the west and F11in the east,

Seam VI incrop in the north and incrop of Bermo Seam in the south.

Sector-C: Area lying between faults F11 in the west and F13 in the east,

Seam VI incrop in the north and incrop of Bermo Seam in the south.

Sector-D: Area lying between faults F13 in the west and F16 in the east,

Seam VI incrop in the north and incrop of Bermo Seam in the south. As the

sector has insufficient strike length due to presence of fault s, and the

coal reserves belong to “indicated “ category due to paucity of boreholes

data, this sector also could not be included in the present OC .

Sector-E: Area south of Bermo Seam incrop in down to 200m depth line

on Seam-VI floor in the south, bounded on the east by Montico Nala and on



the west by Borrea Fault (F7-F7). This is a sector not covered in the

geological report of Gobindpur North block (2001), and has now been

defined for including additional reserves south of the original limits of

Gobindpur North block.

Thus only sectors B, C and E have been considered in the PR of

present OC.

The in-situ reserves in the Govindpur Phase-II OC Block are summarised

below:

Table 3.30

Seamwise & Sector wise net ‘proved’ coal reserves in Gobindpur Phase-II OC block

(Fig in Tonnes)

Av.Grade Seam SECT-B SECT-C SECT-E Total

Coking Non Coking

XI 378754 298467 497120 1174341 W-IV E

X 1499427 1556928 2081300 5137655 W-IV D

IX 311447 372960 521820 1206227 W-IV D

VIII 4963433 4495212 5903820 15362465 Ungraded F

VII 1986057 1523060 938340 4447457 W-III E

VI 637740 776628 879840 2294208 Ungraded F

TOTAL 9,776,858 9,023,255 10,822,240 29,622,353 E Note: 1. The figures are as per “Geological report on Gobindpur North block, East Bokaro

Coalfield, CMPDI” in 2001. 2. Additional OC reserves of 526082 te are present in part coal/part jhama zone in

sector –B in Seam-VIII (454,784 te) and Seam-VI (71,298 te).

3. A deduction of 10% has been made from the gross reserves to provide for

geological loss for unforeseen factors like occurrence of minor faults / burning and

thinning.

Out of a total of 29.622 mt in the OC, Sector-B has 9.777mt (33%), while Sector-C

& D have 9.023 mt (30%) & 10.822 mt (37%) of total coal reserves. The Seam

Karo-VIII constitutes 52%, followed by Seam-X (17%), VII (15%), VI (8%), IX (4%)

and XI (4%) respectively.

The quarried out area (as was existing in 2001) has been fully excluded while

calculating the reserves for the OC block.

Chapter -IV-1

CHAPTER IV

4.0 MARKETABILITY AND LINKAGE

4.1 Demand

Liberalisation of power sector by Govt. of India has generated wide spread

interests for Private and Public sector investments in different industries. As

such, there is an appreciable increase in the number of upcoming new industries

in both Private and Public Sectors. This has resulted in a sharp increase in the

demand of coal in CCL. The Govindpur Ph-II OCP (1.2MTY) is therefore,

proposed with a view to fulfil the above indicated growth in demand.

4.2 Availability

The availability and demand from CCL is given in Table-4.0 below:

Table No. 4.0

COAL DEMAND AND AVAILABILITY OF CCL

(Basis : Chairman CIL's letter to S ecy. Coal in Sep '09)

Sl No. Coal Consuming Sectors Coal Demand (MT)

2009-10 2010-11 2011-12 2016-17

A. TPPs

1 Existing TPSs (that came

up prior to XIth Plan) 29.21 29.21 29.21 29.21

2 XI Plan TPSs (including

IPPs) 11.23 15.32 27.35 49.17

TOTAL for TPPs 40.44 44.53 56.56 78.38

B. Captive Power Plants (CPPs) #

4.03 4.03 4.03 4.03 TOTAL COMMITMENT FOR POWER

SECTOR 44.47 48.56 60.59 82.41

C. Cement Plant # 0.42 0.42 0.42 0.42

D. Steel* 3.60 3.96 4.35 9.25

E. Fertilizer 1.00 1.00 1.00 1.00

F. Sponge Iron # 2.63 2.63 2.63 2.63

G. E-Auction @10% of production 4.60 5.00 5.50 8.30

Chapter -IV-2

H. Others i.e, CPSU, State Agencies, Bricks etc. 2.77 2.77 2.77 2.77

TOTAL Commitment on CCL 59.49 64.34 77.26 106.78

PRODUCTION 46.10 50.00 55.00 83.00

GAP -13.00 -14.00 -22.00 -24.00

The availability figures till end of XIth plan period (2011-12), as shown in the

above table, have been obtained from CCL. The gap in demand and availability

of coal justifies implementation of this project.

4.3 Linkage

Basket Linkage is proposed for the coal from this mine.


Job No. 340721 Chapter-V -1

CHAPTER – V

5.0 MAIN TECHNICAL DECISIONS FOR THE QUARRY

5.1 PRESENT STATUS

This proposal has been prepared as a new project . This report proposes to

exploit the upper Karo Group of seams (Seam VI to XI) based on the “Geological

Report on Coal Exploration Govindpur North Block, East Bokaro Coalfield”

prepared in Dec 2001 and the area south of Bermo Seam incrop upto 200m

depth line on Seam-VI floor in the south, bounded on the east by Mantico Nalla

and on the west by Borrea Fault (F7-F7). This is a sector not covered in the

geological report of Gobindpur North block (2001), and has now been defined for

including additional reserves south of the original limits of Gobindpur North block.

5.2 Boundaries of Mining Block

The Plan showing the quarry boundary is given vide Drg. No. R3-OCM-000456.

The mine boundary has been fixed as follows: -

Northern Boundary

The northern floor boundary has been fixed along the in-crop of Seam VI.

Southern Boundary

The southern floor boundary has been fixed along 180m-depth line on the floor of

Seam-VI.

Eastern Boundary

The eastern floor boundary has been fixed leaving a surface barrier of 50m

against existing course of Montico Nalla at the quarry surface.

Western Boundary

The western floor boundary has been fixed along the major fault F7, which has a

throw of about 50 - 70m. The area on the west of this fault is the up thrown side

and is highly geologically disturbed being dissected by number of faults. This



area has already been worked in patches. And as such, in this PR the area on

the west of the fault F7 has not been considered for working.

5.3 Rated Capacity

The rated capacity of the mine has been determined as 1.2 MTY on the basis of

the following factors:

a) Coal reserves and stripping ratio and

b) Mining & Technical capacity of the mine.

The quarry boundary has been maximized to the extent possible and mining upto

Seam VI has been considered. The extractable reserve has been estimated as

19.53 MT of coal. The life of the mine has been estimated as 20 years. There is

further coal reserve available on the dip side in the south. However, to exploit this

reserve Mantico Nalla flowing north to south on the eastern side has to be

diverted. Without diverting this Nalla the working area becomes very narrow and

beyond a depth of 180m, it will be very difficult to work in this narrow patch.

5.4 MINING RESERVES – VOLUME OF OBR – STRIPPING RAT IO

The mineable reserves have been estimated from the iso-chore plans of the

different seams. A loss of 10% has been taken as geological losses. In addition

to the geological losses, 15 cm of coal thickness has been left in the roof and the

floor of every seam to estimate the mineable reserves of coal.

The total volume of OBR has been estimated from the total iso-excavation plan.

The partings wise volume of OBR has been estimated from the cross-sections.

The total mineable reserves are estimated as 19.53 M.tes with a corresponding

volume of OBR of 28.66 Mm3 at an average stripping ratio of 1.47 m3/te. The

break-up of the seam wise coal reserves and total volume of OB/partings are

given in Table 5.1.



Seam wise Mineable Reserve

Table No.5.1

Sl. No. Particulars Mineable Reserve

(MT)

A SEAMS

1 Seam VI 1.57

2 Seam VII B 2.00

3 Seam VII T 0.99

4 Seam VIII 9.77

5 Seam IX 0.80

6 Seam X 3.64

7 Seam XI 0.76

Total Mineable reserves 19.53

Total Net geological reserves 29.62

B Total Volume of Partings/OB 28.66

C Average Stripping Ratio 1.47

5.5 Geological & Mining Characteristics

The geological & mining characteristics of the proposed Govindpur Ph-II OCP

(1.2 MTY) mine are given in Table 5.2. Total 7 numbers of coal seams are

occurring within the quarriable area. Out of these, Seam VIII is the thickest and

most prominent seam, which contains dirt bands. The coal seams are dipping at

a gradient of 160-230 towards the south.



Table No.5.2

Mining & Geological Characteristics of the Quarry

Sl.

No. Particulars Unit

THICKNESS

RANGE

Average

Value

1. Seam Thickness

A Seam VI M 2 - 3 2.5

B Seam VII B “ 2 - 4 3

C Seam VII T “ 1 – 2 1.5

D Seam VIII “ 22 – 23 22.5

E Seam IX “ 2 – 3 2.5

F Seam X “ 7 – 8 7.5

G Seam XI “ 1.7 – 2.5 2

2. Seam Gradient Degree 16 - 23 -

3. Specific Gravity of the seams Te/m3 1.62

4. Excavation Category of coal Assumed III

5. Parting/Overburden Thickness

A Seam VI and Seam VIIB M 0.2 – 6 3

B Seam VIIB and Seam VIIT “ 0.3 – 3.8 2

C Seam VIIT and Seam VIII “ 10.2 – 14.6 12

D Seam VIII and Seam IX “ 9.3 – 31.5 20

E Seam IX and Seam X “ 0.4 – 5.9 3

F Seam X and Seam XI “ 4.5 – 8 6

6. Excavation Category of OB Assumed 50% Cat.III+50% Cat (IV)

7. OB Volume weight Te/m3 2.40 (approx.)

8. Strike length of the quarry Km 1.50

9. Maximum depth of the quarry M 180

10. Quarry surface area Ha. 76.42



Mining and Technical Capabilities :

The targeted capacity of 1.2 MTY is proposed to be achieved by 4th year of

mining operation.

The time to achieve target production has been fixed on the basis of:

a) Estimated schedule of delivery and erection of main HEMM - capacity

build up.

b) Time required for opening of strike length.

c) Construction period required for coal handling plant, evacuation system

and other infrastructure development.

d) Land acquisition.

5.6 Design Criteria

The following design criteria have been adopted for the mining operation of the

quarry: -

(i) No. Of annual working days : 330

(ii) No. Of daily shifts : 3

(iii) Duration of each shift : 8 hours.

Annual 330 working days has been calculated considering following assumptions:

Calendar days per annum - 365

Less- Public Holidays - (-) 8

Unscheduled delays - (-) 5

Bad weather effect - (-) 22

Working days per annum with

Sunday working: - 330

The opencast mine would be worked on the above 3 shift/day basis and 7

days/week schedule and the number of working days / year are adopted as 330,

considering annual public holidays, unscheduled delays and bad weather effect

particularly in rainy season.



5.7 Life of the Mine

For the rated output of 1.2 MTY of ROM coal and with the mineable reserves of

19.53 MT the life of the opencast mine is estimated as 20 years. The mine will

achieve the targeted production in the 4th year of operation.

5.8 Opening of the Quarry

For the quarry two openings have been proposed. One opening has been

proposed in the northwest, from the incrop of Seam VI near borehole no CMEG

100 at an FRL of +243. To develop the full strike length of the mine for the gainful

deployment of HEMM and to achieve the targeted production earlier, another

quarry opening has been proposed in the northeast. Here also the opening is

from the incrop of Seam VI near fault F11 and an FRL of +280m. This opening

will also facilitate the early starting of internal dump on the eastern part of the

quarry, upto fault F11.

5.9 Mining System

The mining and geological conditions of the mine are as follows: -

(a) Multiple seams to be worked

(b) Steep gradient of 16 – 23 degree of the coal seams.

(c) Variable thickness of OB/Partings.

Considering the above mining and geological conditions, shovel-dumper mining

system with horizontal slicing has been envisaged for working this OC mine.

5.10 Calendar Programme of Excavation

The Summarised Calendar Programme of Excavation is given in Table No.5.3

which has been formulated based on adopted sequence of opencast mine field

development at optimum conditions of mining operations for the entire life of

mine. The total mineable reserves have been estimated as 19.53 MT

corresponding to a volume of OBR of 28.66 MM3 at an average stripping ratio of

1.47 m3/te. The rated output of 1.2 MTY would be achieved in 4th year after the

sanctioning of the PR. The production built-up would be for a period of 4 years.



As may be seen in the table, the peak OB workload is 2.10 Mm3 in the 7th year of

quarry operation.

The detailed calendar program is given in Table 5.4.

Summarised Calendar Programme of Excavation

Table-5.3

Year Coal OB S.R.

1 0.00 0.90 --

2 0.40 1.22 3.05

3 0.80 1.57 1.97

4 1.20 1.88 1.57

5 1.20 1.88 1.57

6 1.20 1.87 1.56

7 1.20 2.10 1.75

8 1.20 1.87 1.56

9 1.20 1.83 1.53

10 1.20 1.73 1.44

11 1.20 1.55 1.29

12 1.20 1.49 1.24

13 1.20 1.39 1.16

14 1.20 1.39 1.16

15 1.20 1.39 1.16

16 1.20 1.39 1.16

17 1.00 1.14 1.14

18 0.75 0.89 1.19

19 0.60 0.71 1.19

20 0.38 0.46 1.19

TOTAL 19.53 28.66 1.47



DETAILED CALENDAR PROGRAMME OF EXCAVATION Table No.5.4

YEAR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Total

OB 0.00 0.68 1.46 1.84 1.82 1.90 2.63 2.20 1.92 1.92 1.67 1.46 1.46 1.46 1.46 1.46 1.22 0.91 0.73 0.47 28.66

TOP OB 0.00 0.41 0.59 0.41 0.48 0.50 0.54 0.57 0.59 0.59 0.41 0.27 0.27 0.27 0.27 0.27 0.23 0.17 0.14 0.09 7.06

XI-X 0.00 0.00 0.00 0.00 0.09 0.09 0.00 0.09 0.14 0.14 0.13 0.13 0.13 0.13 0.13 0.13 0.10 0.08 0.06 0.04 1.60

X-IX 0.00 0.00 0.00 0.00 0.02 0.02 0.01 0.05 0.08 0.08 0.07 0.07 0.07 0.07 0.07 0.07 0.06 0.04 0.03 0.02 0.81

IX-VIII 0.00 0.00 0.06 0.40 0.69 0.74 1.28 0.88 0.61 0.61 0.55 0.50 0.50 0.50 0.50 0.50 0.42 0.31 0.25 0.16 9.47

VIII-VIIT 0.00 0.13 0.54 0.80 0.44 0.44 0.59 0.45 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.30 0.23 0.18 0.12 7.12

VIIT-VIIB 0.00 0.05 0.08 0.07 0.05 0.05 0.08 0.07 0.06 0.06 0.05 0.05 0.05 0.05 0.05 0.05 0.04 0.03 0.02 0.01 0.95

VIIB-VI 0.00 0.09 0.19 0.16 0.06 0.06 0.12 0.10 0.08 0.08 0.08 0.09 0.09 0.09 0.09 0.09 0.07 0.05 0.04 0.03 1.65

S.R. - 3.05 1.97 1.57 1.57 1.56 1.75 1.56 1.53 1.44 1.29 1.24 1.16 1.16 1.16 1.16 1.14 1.19 1.19 1.19 1.47

COAL

YEAR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Total

COAL 0.00 0.40 0.80 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.00 0.75 0.60 0.38 19.53

XI 0.00 0.00 0.00 0.00 0.04 0.04 0.00 0.03 0.05 0.05 0.06 0.07 0.07 0.07 0.07 0.07 0.06 0.04 0.03 0.02 0.76

X 0.00 0.00 0.00 0.00 0.18 0.18 0.02 0.17 0.26 0.26 0.29 0.31 0.31 0.31 0.31 0.31 0.26 0.20 0.16 0.10 3.64

IX 0.00 0.00 0.00 0.00 0.04 0.04 0.01 0.04 0.06 0.06 0.06 0.07 0.07 0.07 0.07 0.07 0.06 0.04 0.03 0.02 0.80

VIII 0.00 0.03 0.25 0.70 0.72 0.72 0.77 0.64 0.56 0.56 0.57 0.58 0.58 0.58 0.58 0.58 0.49 0.36 0.29 0.19 9.77

VIIT 0.00 0.08 0.11 0.10 0.05 0.05 0.09 0.07 0.06 0.06 0.05 0.04 0.04 0.04 0.04 0.04 0.03 0.02 0.02 0.01 0.99

VIIB 0.00 0.15 0.23 0.22 0.10 0.10 0.18 0.14 0.12 0.12 0.10 0.08 0.08 0.08 0.08 0.08 0.06 0.05 0.04 0.02 2.00

VI 0.00 0.14 0.21 0.18 0.07 0.07 0.13 0.11 0.09 0.09 0.07 0.05 0.05 0.05 0.05 0.05 0.04 0.03 0.03 0.02 1.57

OB



5.11 Coal Winning and OB removal

OB Removal

To remove the overburden, two 4 cum diesel hydraulic shovel with 35T Rear

Dumpers have been proposed. The peak OB workload is 2.10 Mm3.

Coal Winning

4 cum diesel hydraulic shovel with 35T Rear Dumpers have been proposed for

mining of 1.2 MTY of coal. The dumpers from the face to the CHP installed on the

surface would transport the coal.

Some major system parameters for both coal winning & OB removal are given below: -

1. Mining Benches

a) Maximum Bench Height

• 4 Cum Elec Hyd shovel bench - 8-10m

b) Minimum Bench Width

Working Bench Width for 4 cum Elec Hyd Shovel - 40m

Non-working Bench width for 4 cum Elec Hyd Shovel - 25m

2. Width of the permanent haul road - 30 m.

3. Width of the temporary transport ramp - 20 m.

4. Usual height of the spoil dump bench - 30 m.

5. Bench Slope (working)

O.B. bench - 700

Coal bench - 700

Dump bench - 370

Overall pit slope - 370.

5.12 Annual Productivity of Main HEMM

The annual productivity of shovels and dumpers have been calculated on the

basis of the following:

(a) Excavation Category:

Coal : Cat. III

OB : 50% Cat. III + 50% Cat. IV.



The materials having compressive strength between 125 to 250 kg/cm2 is

classified as Cat. III and between 250 to 1250 Kg/cm2 as Cat. IV

(b) Standard Utilization of Shift Hours

For Elect. Hyd. Shovel: 61%

For Dumpers 67%

The main mining and transport equipment would be operating on 3 shifts/day and

7 days/week operating schedule. The number of operating days/year has been

adopted as 330.

Based on the above operating conditions, the estimated annual productivity of the

proposed shovels as per the prevalent norms is given below: -

The requirement of dumpers for the transportation of OB and coal has been

calculated based on (a) annual workload (b) annual productivity of dumpers (c)

hauling distanced from the face to the receiving pit/dump site etc. (Table no.5.6).

The annual productivity of dumpers for a lead of 1.0 to 4.5 km is given in

following table: -

Annual Productivity of Dumpers (in M cum) Lead

(in km) 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5

For OBR 35T Dumper +4 m3 Elec. Hyd Shovel

0.1879 0.1571 0.1389 0.1268 0.1146 0.1054 0.0980 0.0921

For Coal 35T Dumper

+4 m3 Hyd

Shovel

0.2245 0.1888 0.1674 0.1532 0.1387 0.1276 0.1189 0.1119

5.13 Equipment configuration

The detailed list of HEMM proposed for Govindpur Ph-II OCP 1.2 MTY is given in

Table 5.5 below:



YEARWISE POPULATION OF HEMM Table 5.5

Year 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Coal

Hyd. Shovel 4 Cum 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Rear Dumpers 35T 2 3 5 5 5 5 5 5 5 5 5 5 5 5 5 4 3 3 2

Drill 160 mm 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Dozer 410 HP 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

OB

Hyd. Shovel 4 Cum 1 1 1 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1

Rear Dumpers 35T 8 10 13 16 16 17 17 17 17 17 15 15 15 14 14 14 11 9 7 5

Drill 160 mm 1 1 1 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1

Dozer 410 HP 1 1 1 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1

Common

Hyd. Shovel (with backhoe)

1.2 Cum 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Wagon Drill (Diesel)

100-120mm

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Grader 280HP 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

RT crane 20T 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Mobile Crane 8T 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Front End Loader 5-6 Cum 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Tyre Handler 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Water Sprinkler (wide spray system)

28 KL 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Wheel Dozer 460 HP 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Fuel trucks 16KL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Fire Truck 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Reclamation

F E Loader 5-6Cum 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Water Sprinkler (wide spray system)

28 KL 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Dozer 410 HP 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1



5.14 Drilling and Blasting Operations

160mm diameter drills are envisaged for drilling in Top OB / partings as well as in

coal seams.

5.15 Spoil Dump

The final stage dump plan showing external dump has been given vide Drg. No.

R3-OCM-000457.

As the gradient of the quarry is very steep, internal dumping could not be

proposed during the quarry operation. However, an area in the east of the

proposed quarry has been identified for internal dumping (marked as Internal

Dump ‘B’) after its exhaustion in the 4th year. The total volume of O.B to be

removed is estimated as 28.66 M.cum. 24.00 M.cum of O.B is proposed to be

placed at the external OB dump ‘A’ and the rest OB of 4.66 M cum is to be placed

as internal dump ‘B’. In the absence of external dump nearby, the external OB

dump ‘A’ has been earmarked in the North of Konar River in the north-western

side of the proposed OC. The same is marked as ‘Open scrub’ in the Survey of

India Topo sheet no 73E/13. The top RL of the proposed external dump ‘A’ is

+300m. The area of dump ‘A’ is 87.00 Ha. The internal dump B is proposed to be

done in the eastern part of the quarry, upto Fault F11. The top RL of internal

dump ‘B’ is +270m.

5.16 HFL Detail

The Konar River flowing from north to south in the west of the proposed quarry

has an HFL of 232.07m as on 01.10.1978. The surface RL ranges from 240m to

252m in the west. On the other hand north-south flowing Montico Nalla on the

east of the proposed quarry has an HFL of 234.95m as on 08.10.2003 whereas

the surface RL ranges from 240m to 252m in the east.



5.17 Quarry Extension in dip side

The proposed PR has considered the reserves of Govindpur North block and the

area south of Bermo Seam incrop upto 180m-depth line on Seam-VI floor in the

south. Further extension of the project in the dip side is possible only after the

diversion of Mantico Nalla.

5.18 Product Mix Quality :

Although coal seam, parting and overburden just above coal seam will be worked

separately having separate benches, yet, there is a chance of deterioration in

quality of coal due to admixtures from roof and floor of the seam and by the

inclusion of bands within the seam. It is envisaged that the roof of the seam is

properly cleaned before blasting. A proper organization and strict quality control

measures are necessary to maintain the quality of coal at faces with all

precautions for quality control to reduce contamination at each contact point of

coal & OB or parting. The quality of coal has been worked out to be ‘Grade –E’

for the Project Report.

The Coal Quality may be improved further by adopting beneficiation measures.


Job No. 340721 Chapter-VI -1

CHAPTER – VI

6.0 PUMPING AND DRAINAGE

6.1 The proposed PR of Govindpur OCP of CCL has been planned for targeted

production of 1.20 MTY. The planning of dewatering the mine has been done

in such a way that the working faces and haul roads in all quarries will remain

dry as far as possible. The layout of the quarry provides suitable gradient

along the quarry floors and the benches to facilitate self-drainage of water to

the sump at the lowest level of the quarry.

It is proposed to provide garland drain around the quarry boundary to arrest

water flowing into the mine from area beyond excavation.

During the heavy monsoon period, the work in lower most bench may have to

be stopped as it will not be possible to pump out the entire make of water on

the wettest day. Therefore, it is proposed to drown a part of the lower-most

bench, which would, then act as sump.

Water accumulated in the sump will be pumped out to the surface and

discharged into the nallah flowing outside the quarry and it will finally join to

nearby river Konar/ montico nallah. It is proposed to create a sedimentation

lagoon by constructing a series of check dams across the nallah. Water

overflowing the check dams would join Konar river. The lagoon will help to

separate the suspended solids from the mine water.

6.2 GENERAL CONSIDERATIONS

The pumping requirement has been calculated on the basis of the following

general considerations: -

- The geographical location of the opencast working.

- Meteorological data from the area concerning rainfalls.



- Life of the mine and percentage probability of maximum rainfall in one

day during the life of the mine.

- Surface feature of the area surrounding the opencast working.

- Catchment area: Mined out area and area beyond excavation, and

dumped area.

- Run-off characteristics of the area.

- Depth of the quarry.

- Inflow to the quarry of UG & seepage water from Konar river.

- Desired location at the surface where the quarry water can be

discharged.

- Surface drainage system.

- Effective working hours – 20 hours/day for pumping calculation, but in

monsoon period pumping will be done round the clock.

- Proximity of Konar River.

6.3 BASIC DATA

The following data has been taken into consideration for arriving at the size of

the pumps: -

(a) Maximum depth of the mine : 180 m

(b) Percentage probability of maximum rainfall for entire mine life

: 5

(c) Probable maximum rainfall in a day in monsoon period from the probability curve

: 160 mm

(d) Run-off Co-efficient considered : (i) For mined out area = 0.9

: (ii) For area beyond excavation =0.1

: (iii) For internal dump Area =0.15

(e) Inflow of water to the quarry due to seepage and underground precipitation of River Konar.

: 20% of probable water accumulation due to rainfall & Konar river.

(f) The rainfall data has been adopted as recorded at

: IMD, Hazaribag



6.4 PUMPING CALCULATIONS

The calculation has been done taking into consideration the entire area of the

mine :-

(a) Approximate Area of excavation of the

mine quarry

: 0.764 Sq.Km.

(b) Approximate Area beyond excavation : 0.04 Sq.Km.

(c) Approximate dump Area in the quarries. : 0.17 Sq.Km.

(d) Probable water accumulation on the day of

maximum rainfall : 97972 Cum.

(e) Taking 20% for seepage and underground

precipitation the total water accumulation : 117566 Cum.

(f) Assuming 20 hours pumping per day,

pumping capacity required to pump out the

total make of water in six days. : 979 Cum./hour

(271 lps)

6.5 SELECTION OF PUMPS

On the basis of the calculation and considering standby pumping capacity, the

following pumps have been provided: -

Main Pump

Four nos. of 300 Cum / hr (82 lps) x 200 m head and two nos. of 150 Cum /

hr (42 lps) x 200 m head pumps have been provided. Out of which one no. of

each pump have been proposed as standby.

Two nos. of 150 Cum./hr x 100 m. head pumps have also been provided to

dewater the quarry during initial period of mining. These low head pumps may

also be used as intermediate stage pumping.



Diesel Pumps

One number of 300 Cum/hr (82 lps) x 200 m head diesel pump has been

provided for emergency requirement.

Face Pumps and Slurry Pumps

Two Nos. of Face Pumps of 50 Cum/hr. (14 lps) x 45-60 m head and two no.

of Slurry Pump of 80 -150 Cum./ hr x 45 m head capacities have been

provided to pump out the water & slurry respectively accumulated near the

working faces.

6.6 SELECTION OF DELIVERY RANGES

The delivery ranges have been selected on the basis of the pumping capacity

during probable maximum rainfall and velocity of flow within the reasonable

limit. The delivery ranges for different capacity of pumps have been selected

for nominal diameters as 250mm, 200mm, 150mm and 100mm for the pumps

as per manufacturer’s standard.

6.7 ESTIMATED CAPITAL COST

The details of cost estimate along with the phased requirement have been

given in Appendix-A.3.3 of pumps, pipes and fittings.


Job No. 340721 Chapter-VII -1

CHAPTER – VII

POWER SUPPLY, DISTRIBUTION, ILLUMINATION & COMMUNIC ATION

7.1 Power Requirement

The estimated connected loads; maximum demand and energy

consumption at optimum production level for the Govindpur Ph-II

Opencast Project for various options are as summarized below :-

S N Particulars Values

1 Connected Load (in kW) 2164 2 Load in Operation (in kW) 1522 3 Maximum Power Demand (in kVA) 918 4 Annual Energy consumption

(in kWhr x106) 7.27

5 Energy Consumption per tonne of coal production (in kWhr/te)

6.06

6 Cost of Energy per tonne of coal production (in Rs)

20.60

Table VII (i) indicates the detailed of power requirement and energy

consumption.

7.2 Existing Power distribution Arrangement

Presently the Govindpur Ph-II O/C Project substation (1x3 MVA, 11/3.3

kV) is receiving power at 11 kV through one no. independent single feeder

with ACSR Conductor from Kathara Regional Substation (1x10 MVA,

33/11 kV). This Substation is situated near Kathara o/c Project at a

distance of 12.0 Km (approx.).



7.3 Proposed Power Supply Arrangement

It is proposed to install another 2 MVA 11/3.3 kV Transformer for

additional electrical equipments and loads. Power shall be distributed from

this sub-station to various additional electrical equipment and load points.

7.4 Distribution and Utilisation Voltage

The distribution and utilization voltage for the project are summarized

below:-

(i) Shovel (4 M3) - 3.3 kV

(ii) Pumps as & above 110 kW - 3.3 kV

(iii) Pumps below 110 kW - 440 V

(iv) Workshop - 3.3 kV

(v) C.H.P. - 3.3 kV

(vi) Lighting (Mining Area) - 230 V (L- L)

(vii) Office - 230 V

7.5 System of Power Supply

For all the utilization voltages in the project, the system of power supply

shall be restricted earthed neutral.

7.6 Substation Capacity

To meet the power requirement of the project, substations with following

transformer capacity has been envisaged:-

(i) Substation: - 1x3 MVA; 11/3.3 kV (Existing)

1x2 MVA; 11/3.3 kV (Proposed)

The transformer capacity of existing Substation is 3 MVA, 11/3.3 kV. This

transformer will feed power to O.B, coal winning equipment (existing),

W/S, colony and other lighting loads. 2 MVA; 11/3.3 kV transformer is

proposed to be installed for feeding power to the additional load of HEMM

deployed for O.B. removal and coal winning and pumping loads.



7.7 Quarry Distribution

Two Nos. of 3.3 kV O.H.T.L. with ACSR ‘DOG’ conductors are proposed to

be erected along the quarry edge of the project. Power to the electrical

equipment shall be tapped from O.H.T.L. through armoured PVC cable.

Sufficient provision of field switches have been made for feeding power to

4 m3 shovels at 3.3 kV. Also sufficient Nos. of field switches has been

provided for operation of H.T. pumps. For operation of L.T. Pumps at 440

Volt, 3.3 /0.440 kV, 630 kVA & 250 kVA step down transformers have

been provided.

7.8 Metering Arrangement

For the purpose of proper allocation of energy charge, 11 kV breaker as

well as 3.3 kV breakers are provided with metering facilities.

7.9 Quarry Illumination

Quarry illumination has been provided by groups of 400W & 250W, 250V

HPSV lamps mounted on 15m high towers, distributed along the quarry

edge. 5 kVA 3.3/0.230 Kv (L-L), lighting transformers have been provided

to feed power to lamps mounted on towers.

The haul road of the mine is proposed to be illuminated by High Pressure

Sodium Vapour lamps of 250 W mounted on poles of suitable height.

Adequate Nos. of 10 kVA, 3.3/0.230 Kv (L-L) lighting transformers have

been provided to facilitate haul road illumination. Provision have been

made in the estimate towards general and spoil dump illumination of the

mine and industrial areas.

Inverter type emergency lighting sets would be installed at important

locations for use at the time of general power supply failure. Over and

above, one no. of 10 kVA generator set has also been provided to meet

the emergency lighting requirement.



7.10 Colony Illumination

The power supply to colony will remain unchanged. Provision of

Transformer, 440V OHTL and other electrical accessories has been made

for colony illumination & electrification both.

7.11 Power Supply to CHP

Proposal has been made to feed power to CHP at 3.3 KV from the project

Substation of the mine. The CHP will have its own incoming power

arrangement & distribution network.

7.12 Power Supply to Workshop

The project Substation will feed power to the workshop at 3.3 kV through

independent feeder. The Workshop-substation will step down the voltage

as per requirement and will feed its loads accordingly.

7.13 Improvement of Power Factor

Static capacitors with automatic p.f. correction relays have been provided

in the substation to improve the power factor to about 0.98 lagging.

Capacity of capacitors required to improve power factor to the above

stated value has been estimated as 508 kVAR for Option I & II and 424

kVAR for Option III at 3.3 kV.

7.14 Power Cost

Based on current DVC tariff, the annual power bill would be of the order of

Rs.247.24 lakhs at the rated coal production and OB transportation.



7.15 Communication

For effective management of different production, service units and for

ensuring safety, the following communication facilities have been

envisaged for Govindpur Ph-II OCP (1.20 MTY).

- Surface Mine Communication System

- Internet with LAN

Surface Mine Communication

EPABX (ISDN) Exchange

In order to cater to the need of surface communication and Integrated

Service Digital network exchange of 50 lines, is proposed for facilitating

voice, data and video communication between various offices, residential

buildings and other strategic points within the mines, at higher speed. A

variety of devices can be connected to a single ISDN line including ISDN

Digital telephone, faxes modems and data transmission facility (E1

support) with LAN port.

ISDN exchange shall utilise pulse code modulation based on fully

distributed microporcessor and dual architecture. Exchange shall be based

on 32 bite processor having distributed control logic and switching control.

Important interfaces like analog PSTN interface and ISDN-BRI/RI shall be

provided. Audio conferencing, video conferencing, Data interface along

with CTS support shall be provided.

Integrated Services Digital Network Exchange provides the transmission

and reception of voice, data and video at higher speed of current modems.

A variety of devices can be connected to a single ISDN line, including

ISDN digital telephone, faxes and modems. Features as caller ID, advice

of charge, disk top conferencing, computer network connectivity and fast

Internet access are important advantages of ISDN exchange.



Digital ISDN exchange with 50 lines and expandable upto 200 lines,

complete with PC based operator console with Pentium PC should be

provided.

The proposed EPABX exchange should have the following main features.

(i) The inbuilt Data switching facility will be used to transmit data

between two exchanges (the other exchange may not have ISDN

features) upto a speed of 19.2 Kbps.

(ii) The system will have DID (Direct Inward Dialing) and E&M two/four

wire facility.

(iii) The system will be interfaced with a broad variety of voice mail

system.

(iv) The system will support 3-way conferencing by allowing a third

party to enter in an existing call between stations/trunks.

(v) The system will continuously performs tests on itself and diagnoses

the results for maintenance reporting purposes.

(vi) The system will record automatically all the incoming and outgoing

calls in its temporary memory for billing, identification, cal type used and

it can be programmed also.

Accessories (i) Maintenance console with printer.

(ii) Float cum Battery charger

(iii) Battery back up.

(iv) Earthing.

External P&T Telephone Communication System

Besides the existing facilities of communication system of the project five

additional telephone sets with a EPABX interface have been provided for

P&T communication and access to public communication grid. These

telephone sets would be located in the residences and offices of key

personnel of the project, sub-station, workshop, etc.



EDP System Facilities along LAN and Internet

It is proposed to deploy electronic data processing facilities for production

planning, control and project management etc. The system envisages to

play a key role in establishment of highly effective Data Base Management

System (DBMS) and Management Information System (MIS) etc.

The type of computer would be small business computer with broad

facilities and also have specific facilities to carry out:

- Pay rolls

- Financial accounting

- Inventory control

- Material management

- HEMM utilisation, breakdown analysis, idle time analysis etc.

- Production, despatch schedule and variances.

- Accident records etc.

- Resource utilisation & MISD.

Before initiating action for installation and implementation of the above

EDP system, a detailed system study would have to be carried out, with

clearly defined system objectives for identifying the data processing needs

and management information system needs of the project. Based on the

results and findings of the study, the system configuration and

specification have to be decided.

LAN Facility

A Local Area Network having 2 PCs in operation is proposed for this

project. The proposed network structure shall have 1 server for catering to

all the clients which shall be primarily connected with the server. This

server will serve as main file and print server. This server shall preferably

be Pentium D core 2 Duo based PC with 1 GB RAM, 120 GB HDD running

at 2.4 GHz min.



The NOS will be Windows NT 4.0 with a required No. of user licenses.

The backbone cabling will be of fibre optic cable.

Internet Facility

An internet connection is proposed for the project to cater to the needs of

information gathering, file transfer and speedy correspondence by E-Mail.

The main internet link will be provided by VSNL/BSNL by means of leased

lines/dial-up modems.

The main server unit will be a Pentium D core 2 Duo based PC with 1 GB

RAM, 120 GB HDD running at 1.7 GHz minimum.

Software

The Network Operating Software will be Windows NT 4.0 with the required

No. of user license. For simultaneous Internet access from multiple client

MS Proxy Server 2.0 will be installed on top of Windows NT 4.0. In this

way a private local network along with Internet gateway can be built up.

7.16 Capital Investment for Plant & Machinery – Electric al

The total capital investment for this Project for electrical power supply,

distribution, illumination, colony lighting, communication and EDP facilities

etc. have been estimated and is given in Appendix-A.3.7.


Job No. 340721 Chapter-VIII -1

CHAPTER – VIII

COAL HANDLING PLANT

8.0 Introduction

The PR of Govindpur Open cast Project is being prepared for a rated capacity of

1.20 MT of ROM coal / annum. The Coal Handling Plant for this project has been

envisaged to handle total production of coal from this mine.

The coal produced from the mine will be crushed and dispatched by tipping trucks

to nearby Washery / Rly. siding for onwards dispatch to customers.

For this size of coal handling plant other supporting infrastructures and suitable

repair facilities have also been provided.

The coal handling plant will operate on 3 shifts/day and 7 days per week basis

round the year like the mine.

8.1 Location

The plan showing the location of CHP is given in drg. No. R3/E&M/002357. As

can be seen from the plan the terrain is rugged. The CHP has been planned

keeping in view the rugged terrain.

The following factors have been considered in finalizing the location of CHP.

(a) Mine boundary

(b) Mine entry

(c) Topography

(d) Availability of free space

(e) Overall economy of the system

8.2 Basic Data

Details

8.2.1 Production capacity of the mine : 1.20 MTY

8.2.2 No. of working days / Year : 330

8.2.3 No. of working shifts/day : 3

8.2.4 Effective working hours/shift : 5

8.2.5 Feed size of coal in (mm) : (-) 1200

8.2.6 Product size of coal in (mm) : (-) 100

8.2.7 Consumer : Power Station & others



8.2.8 Mode of despatch : By Tipping truck to near by

siding or to customer.

8.2.9 Loading hours/day : 365 days / Round the clock

8.3 System Capacity

System capacity of the CHP has been selected to match with the mine

production. Hence for the mines rated capacity 1.20 MTY, the overall

handling capacity of CHP has been envisaged to be 1.20 MTY.

8.4 Description of CHP 8.4.1 Receiving and Crushing of ROM Coal

A receiving platform of suitable size has been planned for the coal handling

plant. The maximum size of ROM coal received from the quarry will be of (-)

1200 mm size. The ROM coal will be discharged by the rear discharge

dumpers to the feeder breaker hopper and it will be crushed to (-) 200 mm

size. Two nos. of feeder breakers of capacity 500 tph each have been

provided out of which one will be in operation at a time and other will work as

standby.

8.4.2 Secondary Crushing

The crushed coal of (-) 200 mm size from the feeder breakers will be collected

by a short conveyor and fed into a roll crusher of 500 tph capacity for crushing

coal up to (-) 100 mm size.

8.4.3 Conveying System

The crushed coal from secondary crusher will be discharged onto an

elevating cum tripper conveyor for storage of crushed coal in overhead

hoppers. The width & capacity of conveyors have been considered as 1200

mm and 500 TPH capacity respectively.

8.4.4 Storage & Reclamation

Provision has been made to store crushed coal in overhead hoppers. The

crushed coal will be fed to overhead hoppers (4X200 Te Capacity) by a short



elevating conveyor. There will be provision of ground stock of crushed coal

after the hoppers.

Below the hoppers motorized flap/hydraulic gate have been provided in each

of the hopper opening for loading the coal into truck.

8.4.5 Loading and Despatch

Each opening of the overhead hoppers will be fitted with motorized flap

/hydraulic gate which may be activated for loading as and when the tipping

truck will be positioned underneath the opening. Thereafter, coal will be

dispatched to nearby washery / Railway siding. Provision for weighment of

coal / trucks has also been envisaged.

8.4.6 Pollution control and Fire Fighting

Necessary arrangements have been provided for dust suppression and fire

fighting. Dust suppression arrangements have been provided at following

locations:

a) Receiving platform of Feeder Breakers

b) Discharge end of Feeder Breakers

c) Crusher top

d) Loading points.

Suitable nos. of dry type portable fire fighting equipment has been provided

to protect the plant from fire hazard.

8.4.7 Power supply, control and internal communicat ion

All the electrical equipment will be suitable for successful operation at the

ambient temperature prevailing at site. Power distribution system with all

protections and measuring facilities, Centralised sequence control, signaling

and instrumentation, Interlocking, Emergency stopping and Illumination etc.

have been provided.

8.4.8 Other Facilities

Two nos. 50 Te capacity truck weighbridges have been envisaged for

Weighment of trucks. Safety switches shall be provided like pull chord switch,



belt sway switch at suitable intervals along the length of conveyors for

stopping of conveyors and training of belts in case of emergency.

Description of CHP

A receiving platform of suitable size has been planned for the coal handling

plant. The maximum size of ROM coal received from the quarry will be of (-)

1200 mm size. The ROM coal will be discharged by the rear discharge

dumpers to the feeder breaker hopper and it will be crushed to (-) 200 mm

size. Two nos. of feeder breakers of capacity 500 tph each have been

provided out of which one will be in operation at a time and other will work as

standby.

Conveying System

The crushed coal (200 mm) will be discharged onto an elevating cum tripper

conveyor for storage of crushed coal in overhead hoppers. The width &

capacity of conveyors have been considered as 1200 mm and 500 TPH

respectively.

Storage, Reclamation & Loading

Storage, Reclamation, Loading and other facilities have been envisaged as

described above for variant –I & II.

8.5 Estimated Capital Cost

The estimated capital expenditure for the coal handling plant as envisaged

for handling the capacity of 1.20 MTY coal is given in the Appendix: A.3.4.0.


Job No. 340721 Chapter-IX -1

CHAPTER – IX

RAILWAY SIDING

9.0 Introduction

The proposed Govindpur opencast project in East Bokaro Coalfield has been

planned for targeted production of 1.20 MTY of coal. Railway siding is not

available nearby to dispatch the proposed production of coal from this mine.

As such a railway siding has been proposed at the abandoned Pipradih

railway siding of CCL for dispatch of coal from this Project. Provision for

loading of coal through wharf wall loading with pay-loader system at the

proposed siding for dispatch of coal produced from Govindpur Ph-II OCP.

9.1 Yard Layout

The yard has been planned for a full rake siding of 58 Box N wagon with

wharf wall facilities (one empty receiving line only) suitable for semi-

mechanised loading.

9.2 Take Off-Point

It is assumed that the proposed railway siding will be taken off from the

Gomio Railway Station of main Gomoh-Barkakana rail line. The length of the

proposed railway siding will be about 0.8 Km to accommodate a rake of 58

‘N’ wagons.

9.3 Characteristic features of the proposed Railway siding are as follows:

(a) One empty receiving line for a full rake length of 58 box N wagons.

(b) Wharf wall loading of wagons.

(c) Environmental measures (dust suppression, fire fighting, plantation

etc.)

(d) Weighment of wagons / rakes.

9.4 Estimated Cost of the Railway Siding

The details of cost estimate of proposed Railway Siding including Yard

portion has been given in Appendix-A.5.


Job No. 340721 Chapter-X -1

CHAPTER – X

WORKSHOP & STORE

10.0 Introduction

Govindpur PH-II OCP is a new mine of Central Coalfields Limited. This

project report has been prepared for a targeted production of 1.20 MTY.

So, a new unit workshop has been proposed. This unit workshop is

envisaged to cater the need of daily maintenance, schedule maintenance,

lubrication, routine inspection, minor/medium repair and replacement of

parts/sub-assemblies of HEMM such as- Dumpers, Dozers, Shovels, and

Drills etc. Minor repair of assemblies and sub-assemblies of pumps, CHP

equipment, electricals etc. deployed in the project will also be performed

in this workshop.

Any major overhaul of equipment and manufacturing of spares on large

scale are beyond the scope of this workshop. These works will be carried

out in Regional Repair Shop or Central Workshop, Barkakana.

This unit workshop will have two parts – Excavation and E&M workshops.

Apart from this, Project store and other common facilities have been

provided. A schematic layout plan of the workshop is shown in drawing

No. R 3 E&M 002378.

10.1 Excavation Workshop

This part of workshop will have the facilities for attending to schedule

maintenance, minor and medium repair or replacement of parts/sub-

assemblies of face and transport equipment such as – Shovels, Drills,

Dozers, Dumpers, Graders, Crane and other miscellaneous equipment

used for mining operation.

All dumpers and dozers coming to workshop for their daily as well as

schedule maintenance will be first washed at the washing stations

provided in the workshop and then brought to the respective maintenance



shop like daily maintenance shop and schedule maintenance (lubrication

& Inspection) shop as per their schedule.

In daily maintenance shop, the equipment will be checked for lubrication,

tyre inflation, oil levels etc.

The equipment for scheduled preventive maintenance as per

recommended schedules of the manufacturers will be directed to

schedule maintenance shop where their complete lubrication will be taken

care along with diagnosis of their technical state. After evaluation of the

condition, they will be sent to the Dumper Repair shop for medium repair

and/or to Regional Repair Shop, Central Workshop for major repairs. The

equipment, which experience incidental problem in the field and require

medium repair will also be directed to Dumper/Dozer repair shop.

Maintenance of Shovels, drills and minor repairs will be carried out at the

site. The components/assemblies requiring further repair will be dis-

assembled from the machine and the dis-assembled components will be

brought to the Repair shop. In case of major repair, these will be sent to

central workshop.

Broadly this workshop will have the following functional shops:

i) Machine shop

ii) Electrical Repair shop

iii) Smithy shop

iv) Dumper Repair shop

v) Dumper Daily Maintenance shop

vi) Schedule Maintenance (Inspection and lubrication) shop

vii) Dozer Repair shop

viii) Welding Shop

ix) Washing Station

x) Stores & common facilities



i) Machine shop

This shop will have the necessary machine tools for restoration of

worn-out parts and manufacture of small non-complicated spare

parts, which are in short supply and required for repair of HEMM.

ii) Electrical Repair shop

This shop will have the facilities for carrying out the minor and

medium repairs of the electrical components of the mining

equipment. The repair facilities have been limited to the parts

replacement and repair of self-starter, Dynamo, Battery charging

etc.

iii) Smithy shop

This shop will deal with the manufacture of small hand forging

components required for the repair need of HEMM equipment. It is

located in one side of the workshop.

iv) Dumper Repair shop

This shop will cater to the need of repair/replacement of

parts/components of the dumpers needing repair after their proper

inspection & diagnosis of defects in the Schedule Maintenance

shop.

The dumpers, which experience incidental problem in the field and

require minor & medium repair will also be attended in this shop.

All dumpers coming for repair must be first washed at the washing

station before entering this shop. There is a common 15/5T floor

operated EOT crane, which will serve dumper repair shop as well

as other shops.



v) Dumper Daily Maintenance shop

Checking of water and oil levels, greasing of lubrication points,

checking of air pressure of tyres, brake testing etc. will be

performed in this shop.

vi) Dumper Schedule Maintenance (Lubrication and

Inspection shop)

The schedule maintenance (lubrication and Inspection) of the

dumpers as per schedules recommended by the manufacturers will

be done in this shop.

For this purpose pressurised lubrication system has been provided.

vii) Dozer Repair shop

This shop is meant for carrying out the maintenance and repair of

dozer. The repairs will be done mainly by the replacement of parts,

units and sub-assemblies.

The entrance & exit of dozers will be from one side only.

viii) Welding shop

This shop will take-up the welding of buckets of shovels and other

jobs of dumpers etc. It will also under take other non standard

welding works.

ix) Washing Station

High-pressure water and steam jet washing unit for dumper and

dozer have been envisaged for washing.

x) Stores & Common facilities

A small store is provided for storage of 10 days consumption of

spares & consumables required for repair & maintenance of HEMM

& other mining equipment.

The different repair shops will draw day-to-day requirement of

spares & other consumables from this store.



A fully equipped fuelling station is also provided for fuelling the

vehicles and transport equipment.

10.2 E&M Workshop

Considering the nature of repair and maintenance of E&M

equipment, which is different from the HEMM, a separate E&M

workshop has been envisaged.

This part of the workshop will have the facilities for schedule

maintenance, day to day maintenance and minor & medium repair

by parts/unit replacement method of all E&M equipments deployed

in the project such as- pumps, electrical equipment, CHP

equipment etc.

Broadly this workshop will have the following functional shops:

i) Machine shop,

ii) Mechanical Repair shop,

iii) Electrical Repair shop

i) Machine shop

This shop will undertake machining and reconditioning of spares. It

will also manufacture small spares, which are in short supply and

required for the repair of E&M equipment.

ii) Mechanical Repair shop

The equipment like pumps and pumping installation experiencing

incidental problem in the field and requiring minor repairs will be

brought to this shop where they will be inspected and repaired.

Apart from this the normal maintenance/repair of the pumps & CHP

equipment will be done in this shop.

iii) Electrical Repair shop

This shop will deal with the testing and minor repairing of electrical

components of CHP equipment, pumps, switchgears etc.



10.3 Project Store

This workshop will have a project store to meet the total

requirement of proposed workshop as well as additional

requirement of the project. Only day-to-day requirement of spares

and consumables will be kept in the workshop store for smooth

functioning of workshop.

10.4 Working Schedule

This workshop will work mainly in two shifts of 8 hrs. duration but a

group of technical personnel will also be provided in the third shift

to look after the field repairs of mining equipment deployed in this

shift.

10.5 Capital Investment

The details of P&M provided for the workshop along with their

estimated cost have been given in Appendix-A.3.2.


Job No. 340721 Chapter-XI -1

CHAPTER - XI

MANPOWER & PRODUCTIVITY

11.1 The manpower requirement for Govindpur Ph-II OC mine for a rated

production of 1.2 MTY of coal has been estimated as 426 (upto target year i.e.,

4th year) for Option-I & III, resulting in an overall OMS of 10.67 Te. The

manpower includes 10 persons for land reclamation/EMP. Earning per man shift

(EMS) is estimated as Rs. 1584.01.

The skill wise break-up of workers (upto target year) is given below: -

Sl. No.

Particulars Category Nos. Percentage of total worker

1. Unskilled I 25 8.4 2. Semi-skilled II, E 27 9.0 3. Skilled C, D, III, IV, V, VI 116 38.8 4. Highly Skilled A, B 131 43.8

Total 299 100

The break-up of total manpower in groups i.e. Workers, monthly paid staff &

officers are given below;

Sl. No.

Particulars No. Percentage of total manpower

1. Workers 299 70.2 2. Monthly Paid Staff 104 24.4 3. Officers 23 5.4

Total 426 100

The manpower would be posted from the internal resources of the company. The

unskilled/semi-skilled manpower may be trained to make them skilled/highly

skilled in order to avoid additional recruitment.


Job No. 340721 Chapter-XII -1

CHAPTER – XII

CIVIL CONSTRUCTION

12.1 INTRODUCTION

The life of this project has been estimated as 20 years. For service and

welfare buildings permanent type of construction has been proposed.

The cost estimate for civil construction has been prepared based on the

cost index. The cost index has been worked out as 2082 with respect to

100 base at Delhi as on 01.10.1976. The details have been given in

Appendix- A.2.3.

12.2 BUILDINGS

12.2.1 RESIDENTIAL BUILDINGS

For residential buildings 55% housing satisfaction has been provided.

The manpower provision for this project upto target year is 426 and 235

houses of different type would be required. There are sufficient existing

quarters, so no additional provision for residential buildings has been

made. The details of number of houses are given in Appendix A.2.1.

12.2.2 SERVICE BUILDINGS

Almost all service and welfare buildings exist there. Provision has been

made in this report for construction of site office, Excv. and E&M

workshop, sub station and some statutory buildings. Details of service

buildings and statement showing capital investment have been given in

Appendix- A.2.2.


Job No. 340721 Chapter-XII -2

12.3 ROADS & CULVERTS

12.3.1 APPROACH ROAD TO PROJECT

Provision for 1.0 km. long approach road to project has been made.

Details have been given in Appendix-A.8.2.1

.

12.3.2 HAUL ROAD

Provision for 3.5 km. long haul road has been made. Details have been

given in Appendix- A.8.2.2.

12.3.3 BRIDGE

Provision for a permanent bridge over Konar River has been made.

Details have been given in Appendix- A.8.2.2.


Job No. 340721 Chapter-XIII -1

CHAPTER - XIII

WATER SUPPLY & SEWERAGE

13.1 WATER DEMAND

The potable and industrial water requirement for the project has been

assessed up to target year as follows:

(i) Portable Water Demand 0.0019 MGPD

(ii) Industrial Water Demand 0.0500 MGPD

13.2 INDUSTRIAL WATER SUPPLY

Details of industrial water supply scheme alongwith the estimated capital

expenditure has been furnished in appendix-A.8.3.1

13.3 INDUSTRIAL SEWERAGE

Estimated capital expenditure for industrial sewerage scheme and details

has been indicated in Appendix-A.8.3.2.


Job No. 340721 Chapter-XIV -1

CHAPTER-XIV

LAND

14.0 The land required for the project Govindpur Ph-II OCP (1.2 MTY) is 207.14

Ha. The forest & non-forest land are 60.47 Ha and 146.67 Ha respectively.

The forest in safety zone i.e. 1.95 Ha is included in the above Forest Land.

Primary land data of core zone based on remote sensing are as follows:

Present Land use

Sl.

No.

Type of Land Area (Ha.)

1 Forest 60.47

2 Village NIL

3 GMK Land 45.00

4 Tenancy 10.67

5 Forest in Safety zone (not to be acquired) (-) 1.95

Total 207.14

The break-up of Land Use (in Ha) is given in the below table.

Break-up of Land -use (in Ha)

Sl.

No

Description Forest

Land (Ha)

Non-Forest

Land (Ha)

Total Land

(Ha)

1. Quarry 49.82 26.60 76.42

2. OB Dump 0.00 87.00 87.00

3. Infrastructure/ Workshop/ CHP 2.00 1.12 3.12

4. Haul Road 6.70 12.60 19.30

5. Safety Zone 1.95 19.35 21.30

Total 60.47 146.67 207.14

Less forest in Safety Zone (-) 1.95 0.00 (-) 1.95

Total 58.52 146.67 205.19


Job No. 340721 Chapter-XV -1

CHAPTER-XV 15.0 ENERGY CONSERVATION 15.1 Introduction Conservation of energy in any form is assuming grater importance in

mechanised mines with rapid industrialisation and increase in per capita

consumption of energy resulting in insatiable demand of energy. The time is not

far off when with the existing quantum of energy; the coal mining industry would

be facing a bleak future. Hence it is of paramount importance that the existing

quantum of energy is put to optimal and economical use with a high degree of

conservation. Special emphasis is laid at the project formulation stage to take all

steps for conservation of electrical energy including power consumption and

power demand or fuel consumption. All efforts have been made to incorporate

energy conservation system and equipment to achieve this in the planning and

installation stage itself. At the stage of planning of the equipment of the opencast

mine, a careful study has been made with regard to location of power sub-station

for the mine, selection of equipment, conductor size, operating power factor with

special reference to the conservation of energy.

15.2 Managerial Control To reduce occurrence of maximum power demand of certain group of equipment

at a time and improve the effective load factor, demand meters have been

proposed in each circuit breaker controlling the feeders.

This would reduce power demand of the project at the same level of power

consumption and also relieve the system of transmitting useless power.

15.3 Energy Audit It is suggested that energy audit in the mine would be done regularly to even out

maximum demand, as far as possible. Such an energy audit would not only pin

point the defined areas but also would highlight the areas so that improvement

can be implemented immediately.



15.4 Maintenance A special emphasis would be laid on the preventive maintenance of all electrical,

mechanical and HEMM equipment. Energy conservation is very much related to

preventive maintenance. Therefore the preventive maintenance would never be

over looked.

As part of management system, a feedback is necessary for better performance

of equipment and statistical information of breakdowns would help in upgrading

maintenance practices, after meaningful and purposeful analysis resulting in

saving of diesel and power.

15.5 Distribution Network

In the power distribution network, care has been taken to select suitable size of

conductors and cables to minimise losses and voltage drop. It is suggested that

the conductor sizes recommended in the P.R are drawn at the construction stage

of the project itself to avoid duplication of work later on. The size should not be

changed either with higher or lower size of the conductor.

Utilisation of voltage for the HEMM within the mine has been recommended as

6.6/3.3 KV. The transformer has been selected to operate at maximum

efficiency.

Each transformer has been selected to cater to the total load. However, all the

transformers under normal conditions would share the load of the mine.

15.6 Lighting For the purpose of illumination in mine and dump areas, sodium vapour lamps

have been recommended to reduce the energy consumption and to achieve the

desired lux level.

15.7 Haul Road

Dumpers used for transportation of O.B and coal, consume lot of energy inform

of consumption of diesel. For effective fuel conservation, it is suggested that haul

roads, which play an important role in the use of dumpers and fuel consumption



are made better to reduce group resistance. To save energy, therefore, it is

absolutely necessary to maintain good haul roads specially at ramps and

turnings.

15.8 The important areas in the opencast mine working where there is scope of

energy saving, have been indicated above. This emphasizes the following: -

(1) The necessity for going in new system technology and equipment.

(2) Even during planning, the aspect of energy conservation with respect to

equipment size is considered.

(3) During operation, it is imperative to conduct an energy audit just lime

preventive maintenance.

(4) Complete monitoring by proper communication and instrumentation

would identify the areas where there is energy wastage so that corrective

measures are taken.

(5) If it deviates from the standards, causes should be identified and

corrective action may be taken.

(6) Maximisation of utilisation within the load allocated by supply agencies by

flattening the peak demand.

(7) Provision of adequate size of pumps in the mine especially during

monsoon.

(8) Staggering mining activities during usual peak hours.


Job No. 340721 Chapter-XVI -1

Chapter – XVI

ECONOMICS

16.0 PR of Govindpur phase-II OCP has been planned at an annual rated target

production of 1.2 MT of coal. The estimated economics has been worked

out considering departmental workings for Coal winning and OB removal.

The summary of the workings is as given below:

OPTION-I Coal Production Departmental OB removal Departmental Average Grade E CHP Coal size (-) 100mm Evacuation of coal Pipradih Railway Siding

The estimated economics has been discussed in the subsequent

paragraphs.

16.1 Total Capital Investment

Initial capital investment has been provided in the proposal till the year of

achieving rated coal production, which is the 4th year. The capital

investment, both Initial as well as beyond target year, has been proposed

from the internal resources of the Company. The capital requirement in Rs.

Crores is given below:

Sl No Particulars Option-I

1 Total Capital up to Target Yr 142.11

2 Existing Capital Expenditure up to 31.3.09 * 45.95

3 Additional Capital Requirement 96.16 4 Specific Investment Rs./te 1184.26 5 Capital beyond target year 2.39

* The Existing capital expenditure of Govindpur and New Swang upto 31.3.2009 has been considered in this report.



The head-wise net effective actual capital expenditure considered in this

PR has been shown in the Table below

New

Sawang Govindpur Total Particulars Rs. lakhs Rs. lakhs Rs. lakhs

Service Building 30.69 95.98 126.67 Land 1284.56 1284.56 Res. Building 22.88 290.20 313.08 Road &Culverts 31.15 111.75 142.9 Water Supply 34.85 4.50 39.35 Electrical 28.94 21.00 49.94 Pump & Pipe 0 0 Weigh Bridge / CHP 0.64 0.64 Work Shop 0 4.36 4.36 Hyd Shovel 64.41 0 64.41 Elec. Shovel 400 K.W. 745.63 745.63 Dumper 35 T 821.72 821.72 Float Engine for Dumper 0.00 0 0 Tipping Truck 2.78 2.78 Water Sprinkler 0.00 0 Elec. Drill 100.87 99.53 200.40 Deisel Drill 0 Dozer 259.64 259.64 FE Loader 31.42 31.42 Surface Crane 0.00 0 0 Veh. General Truck 5.92 7.68 13.60 Exploisive Van 0 Vehicle General Others 5.89 5.89 Vehicle General Jeeps 5.81 5.81 Vehicle General Car 0 Ambulance 0 Prospecting & Boring 0 221.44 221.44 Development CMPDIL Expenses 0 160.78 160.78 Development others (Forest Land) 0 Development Others 0 Other P&M 0 5.64 5.64 Air compressor 0 Mining equip. Mov aux fan 0 Stone Drill 0 Furniture & Fittings 0 Development Sinking wells 0 R&D 0 Drift Others 0 94.36 94.36 Total 2180.90 2414.12 4595.02



The head-wise actual capital expenditure not considered in this PR has

been shown in the Table below:

Rs.in Lakhs

New Swang Govindpur TOTAL Pumps 4.61 4.61 Work Shop 6.63 6.63 Spare Engines 16.58 275.57* 292.15 Tipping Trucks 29.67 29.67 Old Shovel 27.9 27.90 Tata Hitachi EX-350 Excavator 51.74

51.74

Old Dozers 91-92 3.11 3.11 Old FE Loader 1.21 1.21 Prospecting Boring 423.16 423.16 CMPDIL Expenses 81.79 81.79 Other P&M 0.67 0.67 Drifts 4.76 4.76 Total 651.83 275.57 927.41

*- For shovel

16.2 Capital Investments for P&M

Capital investment on P&M is given in Appendix-A.3.

The specific capital investment on P&M worked out for the options is given

below:

Sl No Particulars Option-I Existing 1 Investment on P&M 77.49 21.84 2 Investment on HEMM 53.77 21.23

Specific investment in Rs./te of coal P&M 645.75 3 HEMM alone 448.08

Method of Estimation of Capital Cost

The method of estimation of capital investment for P&M, Civil estimates,

Development Capital, Revenue expenditure capitalised etc. is as follows.

Prices of Plant & Machinery

For the plant and machinery, as far as possible, the prices have been taken

from the Standard Price List of Mining Equipment published by CMPDI and

whenever information regarding price was not available, a broad estimate

was made.



16.3 Capital Investment on Vehicles

The total estimated existing capital expenditure on vehicles is Rs. 0.82 crs.

Most of the existing vehicles are very old and thus additional provision has

been made for some essential new vehicles.

16.4 Opening of Revenue Account

Though the two mines exist, the Revenue expenditure for OB removal in

the first year of operations has been capitalized. The proposed project will

generate revenue surplus from the second year of its operations in which it

will produce 0.4 Mty of coal.

16.5 Estimates of Operating Cost

Appendix-C of the respective Option gives the details of average cost and

profitability for the target production of 1.20 MTY. The method adopted in

estimating the costs are briefly explained as follows:

(a) Wages

The requirement of manpower for the targeted production of 1.20 MTY of

coal is estimated category-wise/ scale-wise and details of manpower are

given in the respective Appendix - B1. Prevalent pay scales for executives

and non- executives are adopted. End points of the relevant pay scales of

executives & non-executives have been considered in estimating the salary

and wages cost.

(b) Stores

Stores cost consists (1) diesel and lubricants, (2) explosives and detonator,

(3) spares for routine repairs etc. Prevalent norms have been followed in

estimating stores cost.

(c) Power

The Power cost is worked out on the basis of KWH for the machines and

other electrical requirements.



(d) Miscellaneous Expenditure

This covers the expenditure on printing & stationery, postages, telephone,

repairs and maintenance of assets other than P&M, workshop debits for

annual servicing and overhauling of HEMM, insurance and taxes for

vehicles, normative contractual cost of major maintenance of HEMM.

(e) Incidence of Corporate Social Responsibility :

To create a fund for corporate social responsibility, an element of cost has

been kept in the average cost of production. The estimated fund has been

computed as 2% of the total capital over the life of the project. Based on

total reserve, the incidence of this fund on cost of production, works out to

Rs. 1.48/t. This has been absorbed as year-wise cost in the cost of

production on the basis of year-wise production.

(f) Final Mine closure Cost

A fund equal to Rs. 6 lakhs/hectare of leasehold land is proposed to be

created towards a fund for final mine closure. The incidence of this fund on

cost of production at 100% capacity, based on total reserve, works out to

Rs. 6.36/t. This has been absorbed in the cost of production on the basis of

year-wise coal production considering an annual escalation of 5% p.a.

(g) Administrative Charges

This includes area overhead, apex overhead etc. and the cost has been

taken as per the actual administration cost of CCL.

(h) Interest on Working Capital

Rate of the interest on working capital is taken as 14.50% per annum.

(i) Interest on Loan Capital:

As the investment for the project is proposed to be met from the internal

resources of the Company, there is no impact due to interest on loan

capital.

(j) Depreciation

Depreciation on assets is computed as per the prevalent norms. The

straight-line method of charging depreciation has been adopted.



(k) Cost & Profitability

The details of the average cost and profitability estimates at 100% capacity

and at 85% capacity are given in Appendix-C . These have been

summarized in the table below for the three options proposed:-

COAL & OB BOTH DEPARTMENTAL 100% 85%

Year AVR. COST Rs./TONNE

Salaries & Wages 164.88 193.98

Stores cost 183.73 203.18

Power cost 21.03 23.81

Miscellaneous cost 25.16 26.93

Cost Incidence of CSR 1.48 1.48

Adminstrative Expenses 100.00 117.65

Final Mine Closure Cost 11.02 12.97

Interest on working capital 24.52 28.03

Depreciation 98.76 116.19

Total Cost 630.58 724.22

Sales Value/Te (In Rs.) 851.00 851.00

Profit/Loss Per Tonne (In Rs.) 220.42 126.78

The declared Selling Price per tonne of coal has been adopted as follows:

Coal Production Departmental

Average Grade ‘E’ Coal size (-) 100mm

Evacuation of coal Pipradih Railway Siding

Declared Price Rs./te 790.00

Additional charge for sizing Rs./te 61.00 Desired Selling Price to yield 12% IRR at 85% Capacity Rs./te

849.73



16.6 FINANCIAL ANALYSIS

The year-wise cash flows at 100% and 85% capacity utilisation have been

estimated and are detailed in Appendix-D. & D.1 respectively. The cash-

flows exclude depreciation and interest on loan capital. The financial IRR

on total capital of the project at 100% and 85% level of the rated output

have been worked out based on the estimates of the aforesaid cash flows

and these work out to be 21.37% and 12.10% respectively.

16.7 ECONOMIC ANALYSIS

The year wise cash flow for the economic analysis at 100% and 85%

capacity utilization have been estimated and are detailed in Appendix- D2

and D.3, respectively. In estimating the economic prices, all taxes, duties

and levies have been excluded from cost of inputs and the shadow rate for

wages and salaries have been taken as 1.00. The economic price of coal

has been assumed to be same as its ruling price. Based on the above

methodology, the economic IRR of the project, at 100% and 85% level of

the rated output work out to 28.30% and 19.11% respectively.

16.8 SENSITIVITY ANALYSIS

The following parameters have been identified for assessing their impact

on the profitability of the project.

a) Capital investment

b) Operating cost

c) Capacity utilisation

d) Selling price of coal

The above parameters have been increased / decreased in Steps of 5% to a

maximum of 25% over the base case and the IRR have been computed. The

following table summarises the results of sensitivity analysis:



IRR AT DIFFERENT STAGES OF Sl No Variable Parameter

0% 5% 10% 15% 20% 25% 1 Increase in Capital 21.37 20.58 19.80 19.07 18.36 17.67

2 Increase in Cost of Production

21.37 19.30 17.17 14.96 12.65 10.20

3 Decrease in Capacity 21.37 18.47 15.39 12.10 8.49 4.41 4 Decrease in Selling Price 21.37 18.07 14.53 10.69 6.39 1.32

16.9 Completion cost of the project

Completion cost of the project is up to targeted year is given at Annexure-

A’. Financial and Economic IRR of the project, based on the estimated

completion capital is given in Appendix- D.4, D.5, D.6 & D.7, respectively

for both 100% and 85% capacity utilization.

Sl. No. Particulars OPTION 1 Completion Capital Rs. Crs 165.22

Fin. Internal Rate of return a) at 100% Capacity 18.79 2 b) at 85% Capacity 9.97 Economic Internal Rate of

return

a) at 100% Capacity 25.66 3

b) at 85% Capacity 15.66


Job No. 340721 Chapter-XVII -1

CHAPTER-XVII

SAFETY & CONSERVATION

Outside agency deploying HEMM or any equipment in the mine for excavation of

coal shall plan their activities in conformation with the prevailing statutory

provisions as per Mines Act 1952 and CMR 1957 applicable for safety in

opencast mines. However, all statutory rules, regulations, applicable laws etc.

and statutory requirement related to Govt. licenses, workers compensation,

Insurance, etc., including minimum wage act for workers employed by the

outside agency shall have to be adhered to. Rules if any imposed by

local/State/Central authorities should also be complied by leaser of

HEMM/equipment and then shall have to supply various protective equipments

viz. helmet, shoes etc. to the workmen at their cost.

All the regulations & schedules of coal mines Regulations 1957 relating to

opencast mining have to be adhered to and implemented in order to maintain

day to day safety precautions as per stature.

SAFETY ASPECTS FOR OUTSOURCING/HIRING OF HEMM/EQUIPMENT

Special precaution should be taken while deploying workers in the mine. Before

employing any labour to the mine proper vocation training should be imparted

and recommendations of VIII Safety Conference should be strictly followed.

Terms and conditions shall be fixed by management for deployment of labourers

by outside agency. Some of the major aspects are as follows:-

A) For persons :

i) No persons shall be deployed unless he is trained at VTC

ii) Records in Form-B Form-D shall be maintained.

iii) Records of Vocational training Certificate and driving license of

operators shall be kept by HEMM outsourcing agency and shall

be made readily available for inspection by management.



iv) No person shall be employed unless person holds VTC

certificate and Management is informed. A record of it shall be

maintained.

v) Adequate supervision shall be maintained by qualified

competent persons.

vi) Outside agency shall follow safety guidelines and safety

instructions from Project Authorities.

B) For Machineries as recommended by DGMS Cir. (Tech.) 1 of 1999:

i) All the machineries to be deployed in mines should be checked

before deployment by competent authority.

ii) Regular checking of m/c deployed by outside agency shall be

done. No unfit machine shall be deployed before the defect is

rectified.

iii) A proper record of repair and maintenance along with inspection

done by management and defect pointed out shall be

maintained and signed by authorized person.

iv) The trucks deployed by outside agency shall be provided with

Audio-visual alarms, proper light for use at night and period

when natural light is not sufficient. Also audio-visual alarms for

reversing on trucks shall be provided.

Other Precautions for machines

i) RTO certificate photo copies of all vehicles shall be submitted to

management

ii) Daily welding, monitoring, inspection shall be done by the agency’s

mechanic as directed by management.

iii) Machine manufacturers should be asked to give risk analysis

details in respect machines deployed by outside agencies..

iv) Suitable type of the fire extinguishers shall be provided in every

machine.



C) General :

i) No person/vehicle shall be deployed at any place other than

authorized place.

ii) All workers should obey lawful instruction of mine management.

iii) Risk Management Plan of tipper/pay loader shall be made and

implemented.

iv) All drivers shall obey systematic traffics rules prepared by

management

v) Before deploying workers they must be trained and briefed

about safety aspects in opencast mine. However during course

of execution of the work, if any accident occurs whether major

or minor, the matter shall have to be immediately informed to

mine management i.e. Colliery Manager/Agent/GM of Area so

that Notices of accidents in a accordance of (Reg.9 of CMR

1957) and Section 23 of Mines Act 1952 may be given and

other necessary steps may be taken in accordance with the

Mines Act 1952.

vi) Outside Agency shall operate transport system in such a way so

as to minimize pollution in the mine.

Stability of Benches, Quarry High walls and Spoil Dumps:

During quarry operations, it is necessary to adopt required mining parameters for

the stability of benches, high walls and spoil dumps. It is also mandatory to

examine systematically the fencing of mine workings, land slides and cracks

between benches. It is required to maintain well graded and wide roads on

benches keeping the width of working areas sufficient for spreading of blasted

rock and movement of the mining and transport equipment.

During actual mining operation, systematic observations of the condition of

benches, high wall slopes and spoil dumps should be carried out and the

dimensions be modified if necessary to suit the local conditions.



Precautions against Danger of Inundation from Surface Water:

1) A careful assessment is to be made against the danger from

surface water before the onset of rainy season. The necessary

precautions should be clearly laid down and implemented. Garland

drains need to be provided to drain away the surface rain water

from coming into the mine.

2) Inspections for any accumulation of rain water, obstruction in

normal drainage and weakening in embankment.

3) Standing order; for withdrawal of working persons in case of

apprehended danger.

4) During heavy rain inspection of vulnerable points is essential. In

case of any danger persons are to be withdrawn to safer places.

5) Nallah or water inlets may be diverted or isolated by

embankments if so required.

Prevention of Flooding of Equipment Deployed at Bottom Horizons:

During the heavy monsoon period, the mining operation in the lower-most

bench may have to be stopped. Therefore, it is proposed to drown the lower-

most bench, which would work as a sump. The water will be pumped out and

discharged into the nearby Nalla.

For ensuring safety of the equipment while working out bottom horizons with no

access to surface profile, the following measures should be taken:

1) Drivage of initial trenches and coal cutting on bottom benches should be

done during the dry period of the year.

2) Ramps should be made for quick shifting of equipment from bottom

horizons, liable to be flooded during monsoon period, to the top horizons.

Prevention of Electric Shocks:

During mining operations, all the statutory provisions of the Indian Electricity

Rules 1956, and Indian Standards for installation and maintenance of electrical

equipment etc. should be observed.



1) For protection from electric shocks to persons, from electrical equipment

with voltage up to 1000V Earth Leakage Relay should be provided which

will automatically disconnect electrical circuits.

2) Closed mobile substations and switchgears should be mechanically

interlocked which exclude the possibility of opening the door when oil

switch and air circuit breakers are in operation.

3) All metal parts of electrical equipment should be properly earthed to avoid

failure of insulation.

4) All H.T lines and cables located within the blasting zones should be

disconnected during blasting operations.

Dust Suppression & Dilution of Exhaust Fumes:

The following measures should be adopted for dust suppression at all quarry

working places, dumps, haul roads, CHP and near other auxiliary mining

operations.

1) Spraying with water on all working faces & haul roads, by special spraying

machines or water-sprinkler.

2) While drilling holes, it is necessary to use dust extraction devices.

3) Installation of local dust suppression and air conditioning devices in cabins

of excavators and drilling rigs may be considered.

4) Levelling of spoil dump surface.

5) Separate dust suppression arrangement should be provided for CHP.

To prevent collection of harmful mixtures in the atmosphere, from the different

sections of quarry workings, it is recommended: -

1) To spread out the sources of dust formation and omission of harmful

gases throughout the working area of the quarry.

2) Drilling & blasting operations should be timed for periods of maximum

wind activity during the day.

3) Dumpers may be provided with purifiers for exhaust gases.



Measures to be taken for Fire Fighting and Fire Prevention:

In addition to statutory provisions, the measures for fire fighting and prevention of

fires are as follows:

1) Organisation of special cell for systematic observations to examine and

prevent fire

2) Removal of spillage of coal on benches and cleaning of coal horizons to

prevent cases of coal heating.

3) Storage of lubricants and cotton waste in enclosed fireproof containers in

working places.

4) Provision of fire extinguishers

Measures to be taken while Drilling Blasting:

Following measures should be taken while drilling and blasting operations in the

quarry:

1) Drilling and Blasting in quarry should be done in accordance with the

provisions of Mines Safety Act, rules and regulations.

2) Adequate safety measures have to be taken during blasting operation in

the quarry so that men/machine is not affected.

Conservation:

The project considers exploitation of Upper Karo group of seams from Seam VI

to Seam XI as per the calendar plan.


Job No. 340721 Chapter-XVIII -1

CHAPTER- XVIII

MINE CLOSURE

Mine closure operations is proposed to be undertaken after examination and

detailed study that there is no further expansion possibility of the mine and the

void is to be suitably filled up so that the land is utilized gainfully by the society.

Intermediate stoppages of operations due to any reasons for a period of time do

not come under the proposed scheme of mine closure. This chapter proposes

following aspects: -

A. Technical Aspects

B. Environmental Aspects

C. Social Aspects

D. Financial Aspects

18.1 TECHNICAL ASPECTS

� Safety aspects.

� Pit slopes and waste dumps.

� Hydrology and hydrogeology.

� Details of decommissioning of the infrastructures.

� Closure of entries like pits and entry to the mine.

18.1.1 Safety

After attaining the final stage dump (including internal Dump) the remaining

portion between dump toe and final stage Quarry floor should be fenced properly

so that no human being or stray animals should be trapped within. Internal

dumps are proposed to be suitably re-graded to avoid deep trenches.

18.1.2 Pit Slopes and waste dumps

The final pit slopes are designed to avoid any slope failure. Technical study is

proposed to be conducted before deciding upon the final slope. Both the external

and internal Dumps are designed in such a way that there are minimal chances



of slope failure. The external Dump is sloped ultimately in the overall range of 25

degree to 28 degrees. The internal dump slopes are designed at milder gradient

so that even with the percolation of water in the dip side of the quarry, the dumps

remain stable. It is proposed that the internal and external dump must be

provided with toe walls/ silt arrestors and garland drains. Vegetation cover on

surface of these dumps is proposed to be ensured as a final closing operation.

18.1.3 Hydrology and Hydrogeology

In the mine closure plan, the surface flow pattern of precipitation and mine water

drainage is envisaged to be examined and the water channel suitably laid down

so that this is acceptable to the local community and it do not disturb the general

hydrology of the area. Efforts are proposed to be made to regenerate the ground

water resources.

18.1.4 Decommissioning of the infrastructure-

The coal project develops lot of infrastructure for sustaining their operations.

These include Workshop, Coal Handling Plant, Railway Siding, Office Complex,

Residential Complex, Roads, Pipe Lines and Transmission Line.

Decommissioning of the infrastructure should be planned in such a way that the

Land occupied by these infrastructures is released. However, these

infrastructure is proposed to be reused for the neighboring projects /mine.

18.1.5 Closure of entry to the mine-

All entries to the mine must be effectively sealed. This will prevent illegal mining,

entry of fire and water etc.

18.2 ENVIRONMENTAL ASPECTS

� Air, water, dust.

� Reclamation of forest/vegetation.

� Management of recharge areas.

� Acceptable surface and ground water flows.

� Alternative use of land



18.2.1 Air, water, dust

It is proposed that air quality; water quality and dust level is to be monitored.

Necessary actions to check the pollution from the closed mine, if any, in respect

of air, water and dust is to be taken after examining the local site conditions then

prevailing.

18.2.2 Reclamation of Forests/ vegetation:

It is proposed that major portion of the project area is covered with vegetation.

This will involve both forestland as well as non-forest land. Certain areas, mostly

industrial areas, where service building are proposed to be located and to be

used are not proposed for plantation.

18.2.3 Management of recharge areas:

It is proposed that the recharge areas are fully utilized and sufficient availability

of water, if feasible, is ensured to enhance ground water availability.

18.2.4 Surface and ground water flows

In the final stage, wherever the mine water is likely to flow out to surface and

meet the natural drainage system, the quality of water is proposed to be

assessed and flow pattern for mine water be properly modified/ redesigned.

Alternately, the water treatment arrangements may be considered depending

upon the local site conditions.

18.2.5 Alternative use of land

During the mining operation, the land usage changes from its pre-mining

scenario. The final stage land use plan shows the use of land in a post-mining

scenario when coal-mining operations have completed. Alternative use of land,

specially released from infrastructure areas and vacant areas, as proposed to be

planned and properly designated for post-mining land uses depending on the

existing conditions prevailing at that point of time. While for OB dumps and

acquired forest areas, vegetation and afforestation has been proposed as a final

land use. While agriculture may be the best land use, if feasible, and if it is

supported by some irrigation facilities.



18.3 SOCIAL ASPECTS

� Re-deployment of work force.

� Management of community facilities

� Canalization of available water

18.3.1 Re-deployment of work force

The peak work force required for mine operations is in the first few years of the

mine when construction activities as well as operational activities achieved their

peak.

This work force slowly goes down with completion of development and when only

the operational work remains. Again near the end of the mine life, say 4-5 years

before closure, the activity of the mine starts getting reduced and therefore

management gets opportunity to taper the operational manpower. After closure,

skeleton service people are proposed to be left for continuing with the actual

closure operations. The reduction of manpower could be done as per the

following options:

• Natural retirement.

• Implementation of VRS schemes for age group of +50.

• Retraining and redeployment of younger groups – 40.

• Transfer of experienced middle-aged groups between 40-50 years to

other projects.

Retrenchment of people with suitable compensation after exhausting all the

above options.

18.3.2 Management of Community Facilities

The community facilities are proposed to be developed by coal projects for

betterment of the neighboring community. The project management provides or

assists in developing educational facilities, health facilities, community halls and

also some communication facilities. After the mine closure, these facilities are to

be continued for the neighboring communities to the possible extent. The closure

plan will envisage interaction of mining company with the state or local bodies

who will take over these facilities and run the same for the community. A onetime



payment may be made by the coal companies towards running these facilities,

which is proposed to be taken care of by the local/state bodies.

18.3.3 Canalization of available water

If it is found that the mine is having sufficient water and on closure, the mine

water flows into the surface watercourses, canalizing this water for surrounding

community for their irrigational/domestic uses may be taken up.

18.4 FINANCIAL ASPECTS:

� Creation of a corpus fund for the final mine closure

� Cost of closure activities.

� Cost towards organization for executing the closure activities.

� Cost of the post project monitoring

� Bond/insurance for the closure cost � 18.4.1 Creation of a corpus fund for the final mine closure

It is proposed that a corpus fund for final mine closure to be created from the

retained earnings of the project. The fund creation is proposed to be started after

the project earns revenue, which is in surplus, after deducting all the negative

cash flows. Preferably the corpus fund should be created after the mine comes

under revenue. However, in case of shortage of funds, corpus fund creation may

be deferred till the mine attains target production. This fund should be judiciously

created so that the objective of the final mine closure can be smoothly met. This

will depend on the local site conditions, requirement of mine closure, mine

closure plan. Site specific mine closure plan is proposed to be prepared and

approval of the company board may be obtained. A provision towards Corpus

fund equal to Rs. 6 lakhs/hectare of leasehold land is proposed to be created

towards a fund for final mine closure. The incidence of this fund on cost of

production at 100% capacity, based on total reserve, works out to Rs. 6.36/t.

This has been absorbed in the cost of production on the basis of year-wise coal



production considering an annual escalation of 5% p.a. This fund will not only

cater for re-grading but will also cover other ancillary expenditure.

18.4.2 Cost of Closure Activities

As proposed above, many activities are proposed to be undertaken after the

closure of the mines, which naturally will involve expenditure. Some of the

closure activities will, in fact, form part of normal mining operations. However,

some activities are proposed to be addressed only after completion of the coal

mining operations. The cost for all those activities, which are to be executed after

coal winning, is proposed from the retained earning of the project for meeting the

expenses.

18.4.3 Cost of Organization for executing the closure activities

After the completion of the coal mining, an organization consisting of persons of

different disciplines is proposed to be maintained to undertake and implement

the closure activities. The organization may be provided with a vehicle for

discharging day-to-day duties. Maintenance cost of this organization is proposed

from the retain earnings of the project. A small team consisting of 2-3 technical

people may be required to oversee the efficacy of the closure activities. This

monitoring may be conducted for 4-5 years after the mine closure activities.

18.4.4 Cost of the post project monitoring

After the closure activities have been implemented the project is proposed to be

monitored regularly for 4 to 5 years. During this period of 4-5 years, cost towards

project monitoring is proposed from the retain earnings of the project.



ENVIRONMENT

18.5 General

Govindpur Phase - II Opencast project is one of the new coal projects of the

East Bokaro Coalfields of C.C.L. The proposed OCP is located in the North –

West part of existing Govindpur lease hold area between Konar River on the

west and Montico Nallah on the east. The block covers an area of about 8 sq.

km. Govindpur OCP Phase - II falls in the Govindpur Northern sub-block, which

forms the northern most part of the Govindpur Block, with an area of about 3.5

sq. km. are potential seams for opencast mining, both qualitatively and

quantitatively. Considering the mining aspect, shovel- dumper mining system

has been envisaged.

Due to liberalization and globalisation in the country, there are sudden surge in

power demand. In our country, 80% of total power demand is met by thermal

power. This trend is expected to continue for at least another 50 Years. As per a

study, it has been estimated that there would be shortage of power grade coal

for generation of electricity in the country. So, to meet the power demand, it

would require more thermal power stations and consequently more coal. There

is already shortage of indigenous coal and this shortfall is expected to be around

260Mt in XI year plan. To meet the coal demand, it is very important to increase

the coal production by opening the new mines or expanding old project. In order

to bridge the gap, between demand and availability, a project report of

Govindpur Phase - II OCP (1.20Mty) has been prepared. Opening of Govindpur

Phase - II OCP is being sought because it is technically and economically viable.

This project will be very much helpful in the development of economical condition

of country. More over, this will generate employment opportunity. This will also

increase the economical condition of these places with the improvement in basic

needs of people such that communication, education and medical facilities.

Thus, we can see that opening of this mine is very important in the economical

development of country.



18.5.1 Pollution & Mitigation Measures: -

Any opencast mining project particularly coal mines pollutes the various

attributes of environment. Major affecting parameters are Air, Water, Noise and

land. Details of study about the effect due to pollution in this parameter have

been discussed and various mitigation measures are suggested in respective

chapter.

Precautions against the pollution are taken, right from the planning time of the

project. Utmost care has been taken during the planning period so that there is

least generation of pollution and suitable mitigation measures against these

pollutants.

18.5.1.1 Air: -One of the worst affected environmental attributes in mining

project is air, which gets polluted due to blasting, excavating, transporting,

loading & unloading of coal and OB. These activities of mining create the

pollution by increasing the SPM level in the environment. This is low fugitive in

nature and settled quickly and more over this is not harmful gas. Emission from

the exhaust of vehicle spread SOx and NOX. The SOx and NOX are fugitive in

nature and disperse in atmosphere.

It is envisaged that there would be good quality haul road with maximum slope

1:16 in general and coal transport is to be done by rail. HEMM to be maintained

on time schedule frame and low Sulphur diesel would be used. This will reduce

the emission from the exhaust of vehicles, so the SOX and NOX.

During the operational time, water sprinkling will be done regularly; Haul road

and other roads will be maintained and cleaned properly and regularly. Dust bag

is to be used in drilling machine and blasting will be done at the time of

maximum mixing height. All loading, unloading and transfer point will be wetted

by water. These measures will reduce the generation of SPM to a large extent.

For preventing the SPM to spread, green belt along the quarry, haul road

workshop, external OB dump, colony, etc would be developed.



18.5.1.2 Water: - Water is another environmental attributes that get polluted from

the effluent of mine water, workshop etc. However, these pollutants are only

physical in nature in the form of TSS, which are easily filterable and not much

harmful to human or aquatic life. Generally, water does not get polluted

chemically in Indian mines.

Preventing the water pollutions also start right from the planning stage. Planning

is done in such a way that there is zero effluent discharge in dry days. Effluent

will be recycled. In rainy days, effluent is allowed to discharge only after proper

treatments. Storm water drain network in the whole area, have been planned in

such a way that the surface run-off flow from the dirty area do not get mixed up

with clean area flow. Clean area water flow will be allowed to discharge directly

in to natural drain. While the dirty area water flow will be treated properly before

discharging in to natural drain. These measures will reduce the surface water

pollution to a large extent.

Due to opening of mine, there is lowering of water table. As per detailed

hydrological report, water table is to be affected up-to a maximum distance of

600 m from the edge of quarry for the mining depth of 100 m. It is not a big area,

so there is no hindrance for a large population.

18.5.1.3 Spoil Dump

The total volume of O.B to be removed is estimated as 28.66 M.cum. 24.00

M.cum of O.B is proposed to be placed at the external OB dump and the rest OB

of 4.66 M cum is to be placed as internal dump. The area of proposed external

dump is 87.00 Ha.

Big and high spoil dumps give the very ugly look to the local aesthetic view as

well as it increase the air and water pollution. Hence it needs a careful

reclamation plan so as it can be utilized by local people and aesthetically

matches with the local topography.

Keeping in view of the above, all spoil dumps would be reclaimed both physically

and biologically. Physical reclamation would be done in such a way that human

and animal can reach the top easily and it will encourage animals to make their



dwellings. Biological reclamation would be done in such a way that local people

get benefited from it. Mixed type plantation will be done which is sustainable in

the local climate and environment.

18.5.1.4 Land: As we know, open cast mining completely changes the

topography of the area i.e. It creates large open deep excavation pit and huge

high O.B. dumps. As the dump materials are in loose state and surface does not

conform to natural angle of repose. So in this condition, unless they are treated,

they are venerable to erosion caused by blowing wind and surface run-off.

Continuous erosion of deep slope may lead to slope failure-causing loss of

property and life. Such untreated dumps constitute a potential source of air and

water pollution and safety hazard for employees.

Overburden dumps needs the continuous parallel process of reclamation with

mining works till the closer of mine. After closure of mines it needs reclamation of

whole area to improve the over all aesthetics view in such a away that area

become the source of income for the local inhabitant.

Land Reclamation does not mean restoration of the degraded land to the pre-

mining land pattern.

There are several options available for land use pattern for reclaimed land.

Factors discussed below would be considered for selection of appropriate land

use pattern for reclaimed land.

(i) Pre-mining land use pattern

(ii) Properties of top soil/sub-soil

(iii) Socio-economic factors

(iv) Availability of technology for reclamation

(v) Climatic condition

(vi) Existing Flora & Fauna in the area.

Now-a-days mine plan is being prepared in such a way that there is zero effluent

discharge in dry days. In rainy days, effluent is allowed to discharge only after

proper treatments. There will be increase in the depth of water table due to deep



excavation for mining but this effect would be occurred up-to maximum extent of

one Km. from the cutting edge of mine.

18.5.1.5 Infrastructure:

18.5.1.5.1 Housing:

The existing Residential Buildings of New Sawang OCP will suffice the needs of

this Project. Hence, no additional Residential Buildings will be required.

Accordingly, no additional capital has to be provided in this head.

18.5.1.5.2 Services:

Major service buildings like PO office, site office, store shed, electrical sub-

station, workshop shed etc. are already existing in the project.

18.5.1.5.3 Workshop & Store

This Project Report has been prepared for 1.2 MTY, a Unit Workshop consisting

of Excavation and E&M workshop has been proposed. This unit of workshop is

envisaged to cater the need of daily maintenance schedule maintenance,

lubrication, routine inspection, minor/medium repair and replacement of

parts/sub assemblies of HEMM such as Dumpers, Dozers Shovels etc.

18.5.1.5.4 Power Supply

Presently the Govindpur Ph-II O/C Project substation (1x3 MVA, 11/3.3 kV) is

receiving power at 11 kV through one no. independent single feeder with ACSR

Conductor from Kathara Regional Substation (1x10 MVA, 33/11 kV). This

Substation is situated near Kathara o/c Project at a distance of 12.0 Km

(approx). It is proposed to install another 2 MVA 11/3.3 kV Transformer for

additional electrical equipments and loads. Power shall be distributed from this

sub-station to various additional electrical equipment and load points. Power

shall be distributed from this sub-station to various additional electrical

equipment and load points. Estimated maximum power demand for this project

will be 918 kVA. Heavy Earth moving Machines consume significant power in

opencast project. Coal Handling Plant including crushing & material handling

facilities, mine dewatering, workshop, offices, colony etc. add to the total power



demand of the project. On achieving the targeted Coal production and

commissioning of Shovels, drills, coal Handling plant, Workshop and Main

Pumps, the power demand of the OCP is expected to touch the maximum

demand.

18.5.1.5.5 Road & Culverts

Approach road to mine and colony roads exist there. However provision of 3.5km

of haul road and 1km of approach road to project has made.

18.5.1.5.6 Water Supply and Sewerage

Additional provision has been made to fulfill the potable and industrial water

demand.

18.5.1.5.7 Railway Siding:

The coal from this OCP is proposed to be dispatched to Pipradih Siding.

18.5.1.5.8 Coal Handling Plant

The Coal Handling Plant for this project is envisaged to handle total production

(1.2 MTY) of coal from the mine.

The coal handling plant shall have facilities for receiving coal from rear discharge

dumpers, crushing of coal to (-) 100 mm size, conveying, storing, reclamation

and loading into evacuation network of conveyor. Sufficient storage has been

provided in the coal handling system to meet the eventualities of disrupted coal

production in the mine or dispatch irregularities.

The plant will be operated in synchronization with the production of the mine.

The coal handling plant shall also be provided with suitable repair,

communication and other auxiliary facilities to meet the day-to-day requirement

in the plant operation.

(a) Feed Size in MM :- (-) 1200

(b) Product Size In MM :- (-) 100

(c) Mode of Dispatch :- By Tipping truck to near by siding

or to customer



(d) System Capacity :- 1.2 MTY

18.5.1.5.9 Pumping & Drainage

The planning of dewatering the mine shall be done in such a way that the

working faces and haul roads in these quarries shall remain dry as far as

possible. The layout of the quarry provides suitable gradient along the quarry

floors and the benches to facilitate self-drainage of water to the sump at the

lowest level of the quarry. During the heavy monsoon period, the work in lower

most benches may have to be stopped, as it will not be possible to pump out the

entire make of water on the wettest day. Therefore, it is proposed to drawn a part

of the lower-most bench, which would, then act as sump. Water accumulated in

the mine sump will be pumped out to the surface and finally discharged into the

near by main drain / Nala of the mine.

regional institute-iii - forests...

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