tunnel design-economical analysis

7/28/2019 Tunnel Design-economical Analysis

1/6

CONSTRUCTION COST PER METER LENGTH OF TUNNEL

Min. thickness of lining(cm) 15Discharge(cumec) 20.7Darcy's friction factor 0.012

Cost/unit 2Combined efficiency 0.92

% of discharge


2/6

1 Cost of Excavation Unit factors 0.25 0.29 0.33 0.38 0.42

Total number 8204 12305 14355 19686 19686

Quantity 66 .913875 100.3626563 117.0829688 160 .5639375 160.5639375

Rate Rs. 2900 2900 2900 2900 2900

Cost Rs. 194050.2375 291051.7031 339540.6094 465635.4188 465635.4188

Longitudinal supports

Size of Section ISHB ISHB ISHB ISHB ISHB

Spacing s=0.75m c/c

Wt/m length kg 50 50 50 50 50

No. 4 4.5 5 5.5 6

Length of tunnel supported m 1537.5 1845 2152.5 2460 2460

Quantity MT 307.5 415.125 538.125 676.5 738

Rate Rs. 35000 35000 35000 35000 35000

Cost Rs. 10762500 14529375 18834375 23677500 25830000

SFRS(Steel Fibre Reinforced Shotcreting)

Thickness mm 50 50 50 50 50

Length provided m 15% x Length 690 690 690 690 690

Quantity cum 84.00 97.55 111.09 124.64 138.19

Rate Rs. 2900 2900 2900 2900 2900

Cost Rs. 243595.1674 282884.7105 322174.2536 361463.7967 400753.3399

Drilling drainage holes

Length m 30% x Length 1380 1380 1380 1380 1380

No./m m s=2.00m c/c 4 4.5 5 5.5 6

Depth of hole m 0.85 1.275 1.4875 1.7 1.9125 2.125

Total length m 1759.5 2052.75 2346 2639.25 2932.5

Rate Rs. 900 900 900 900 900

Cost Rs. 1583550 1847475 2111400 2375325 2639250

TOTAL CAPITAL COST(Rs.) 85422699.51 109500386.71 133892726.58 160800312.31 185688050.26

TOTAL CAPITAL COST(Rs. Lakhs) C_1 854.23 1095.00 1338.93 1608.00 1856.88

Energy Loss

Velocity m/s 11.71 8.61 6.59 5.21 4.22

Due to friction(Manning's) 298.03 130.98 64.26 34.28 19.55

Head Loss(darcy's) m 257.36 119.07 61.07 33.89 20.01

Trash Rack m 3.41 1.84 1.08 0.67 0.44

Entrance Loss m 0.53 0.29 0.17 0.10 0.07

Exit Loss m 5.29 2.85 1.67 1.04 0.69Total Head Loss(As per Manning's) m 307.25 135.96 67.18 36.11 20.74

Power kW kW 57401.57 25400.38 12549.88 6745.65 3875.06

Energy Loss kwh 226276 995.20 100128317.56 49471611.92 26591365.67 15275480.84

Revenue Loss Rs. 208174 835.58 92118052.16 45513882.96 2 4464056. 41 14 053442.37

Operation Cost 12% x C_1 9823610.44 12592544.47 15397 663.56 18492035.92 21354125 .78

Total Cost Rs. 217998 446.03 104710596.63 60911546.52 42956092.33 35407568.15

Cpst power Loss+Concrete 303421145.54 214210983.34 194804273.10 203756404.64 221095618.42


3/6

CONSTRUCTION COST PER METER LE

Interest 8O&M 1Depreciation 2

Contingency 0.5Total 11.5

1 Cost of Excavation Unit

Shape of the tunnel

Diameter of tunnel m

Excavated Dia. m

Length of the tunnel m

Finished area of tunnel m2

Thickness of lining cm

Excavated Area of the tunnel m2

Volume of the tunnel m3

Allowance for over break m3

Unit rate of excavation( incl. of suport system) m3

Total Cost Rs.

2 Concreting

D-ShapeConcrete Grade

Area m2

Volume m3

Allowance for 15% over break

Total Cost of concreting Rs.

Reinforcement

Qty of steel [@ 50.00 kg/cum ] MT

Total Cost of reinforcement Rs.

Rock Bolts

Spacing m

Length of Rock bolt m

No. of rockbolts

Unit rate Rs.

Total cost of rock bolting Rs.

Steel Liner

Grade of Steel MS

Length m

Thickness mm

Quantity MT

Rate Rs

Total cost of steel liner Rs

Contact Grouting

Depth of consolidation grouting m

Grout consumption MT

Cost of drilling & grouting Rs.

Consolidation Grouting

0.85 Depth of consolidation grouting m



Contact Grouting

Depth of grouting[ thickness+d in rock] m

Total depth m



Permanent supports

Size of Section

Spacing

Wt/m length kg

Perimeter m

Length of tunnel supported m

Quantity MT

Rate Rs.

Cost Rs.

0.725 Providing precast Lugs

0.075 No along perimeter

0.15 No. along length

Fixed Annual Charges

0.46 0.50 0.54 0.58 0.63 0.67 0.71

2.75 3.00 3.25 3.50 3.75 4.00 4.25

2.9 3.2 3.4 3.7 4.0 4.2 4.5

4600 4600 4600 4600 4600 4600 4600

5.94 7.07 8.30 9.62 11.04 12.57 14.19

16.5 18.0 19.5 21.0 22.5 24.0 25.5

6.67 7.94 9.32 10.81 12.41 14.12 15.94

30699.04 36534.40 42877.18 49727.37 57085.00 64950.04 73322.51

34382.93 40918.53 48022.44 55694.66 63935.20 72744.05 82121.21

3573.00 3573.00 3573.00 3573.00 3573.00 3573.00 3573.00

122850200.64 146201891.67 171584164.53 198997019.22 228440455.74 259914474.08 293419074.26

M20 M20 M20 M20 M20 M20 M20

0.734 0.874 1.025 1.189 1.365 1.553 1.753

3377.00 4018.91 4716.64 5470.19 6279.55 7144.74 8065.74

506.55 602.84 707.50 820.53 941.93 1071.71 1209.86

3883.55 4621.75 5424.14 6290.72 7221.49 8216.45 9275.60

11262308.25 13403077.58 15730000.77 18243077.82 20942308.72 23827693.48 26899232.09

168.8501986 200.9456909 235.8320956 273.5094126 313.977642 357.2367838 403.286838

4619910.284 5498075.049 6452601.967 7483491.039 8590742.264 9774355.642 11034331.17

2.00 2.00 2.00 2.00 2.00 2.00 2.00

2.45 2.50 2.65 2.70 2.75 2.80 2.85

14540.00 15440.00 16345.00 17245.00 18150.00 19055.00 19955.00

857.93 857.93 857.93 857.93 857.93 857.93 857.93

30562040.39 33116098.00 37160594.50 39946507.70 42821431.13 45773997.22 48791980.48

250 250 250 250 250 250 250

460 460 460 460 460 460 460

8 8 8 8 8 8 8

250.30 272.99 295.68 318.37 341.05 363.74 386.43

35000 35000 35000 35000 35000 35000 35000

8760515.338 9554615.713 10348716.09 11142816.46 11936916.84 12731017.21 13525117.59

3079.939 3468.318 3874.762 4299.270 4741.841 5202.477 5681.178

154.00 173.42 193.74 214.96 237.09 260.12 284.06

76998.47244 86707.95724 96869.04598 107481.7387 118546.0353 130061.9359 142029.4404

15482.489 18425.441 21624.302 25079.072 28789.751 32756.339 36978.836

774.12 921.27 1081.22 1253.95 1439.49 1637.82 1848.94

1161186.641 1381908.068 1621822.664 1880930.427 2159231.357 2456725.455 2773412.721

0.665 0.68 0.695 0.71 0.725 0.74 0.755

10689.197 13007.969 15603.053 18486.407 21669.985 25165.744 28985.639

267.23 325.20 390.08 462.16 541.75 629.14 724.64

400844.9039 487798.8316 585114.4993 693240.2513 812624.4323 943715.3867 1086961.459

ISHB ISHB ISHB ISHB ISHB ISHB ISHB

50 50 50 50 50 50 50

4.50 5.00 5.50 5.50 6.00 6.50 7.00

2767.5 3075 3382.5 3382.5 3690 3997.5 4305

138.375 153.75 169.125 169.125 184.5 199.875 215.25

35000 35000 35000 35000 35000 35000 35000

4843125 5381250 5919375 5919375 6457500 6995625 7533750

7 7 8 8 9 9 10

3691 4101 4511 4511 4921 5331 5741


4/6


Total number

Quantity

Rate Rs.

Cost Rs.


Size of Section

Spacing

Wt/m length kg

No.


Quantity MT

Rate Rs.

Cost Rs.


Thickness mm

Length provided m

Quantity cum

Rate Rs.

Cost Rs.


Length m

No./m m

Depth of hole m

Total length m

Rate Rs.

Cost Rs.

TOTAL CAPITAL COST(Rs.)

TOTAL CAPITAL COST(Rs. Lakhs) C_1

Energy Loss

Velocity m/s

Due to friction(Manning's)

Head Loss(darcy's) m

Trash Rack m

Entrance Loss m

Exit Loss mTotal Head Loss(As per Manning's) m

Power kW kW

Energy Loss kwh

Revenue Loss Rs.

Operation Cost

Total Cost Rs.

Cpst power Loss+Concrete

0.46 0.50 0.54 0.58 0.63 0.67 0.71

25837 28707 36088 36088 44289 47979 57410

210.7330313 234.1414688 294.34275 294.34275 361.2321563 391.3287188 468.2503125

2900 2900 2900 2900 2900 2900 2900

611125.7906 679010.2594 853593.975 853593.975 1047573.253 1134853.284 1357925.906

ISHB ISHB ISHB ISHB ISHB ISHB ISHB

50 50 50 50 50 50 50

6.5 7.5 8 8.5 9 9.5 10.5

2767.5 3075 3382.5 3382.5 3690 3997.5 4305

899.4375 1153.125 1353 1437.5625 1660.5 1898.8125 2260.125

35000 35000 35000 35000 35000 35000 35000

31480312.5 40359375 47355000 50314687.5 58117500 66458437.5 79104375

50 50 50 50 50 50 50

690 690 690 690 690 690 690

151.74 165.29 178.84 192.38 205.93 219.48 233.03

2900 2900 2900 2900 2900 2900 2900

440042.883 479332.4261 518621.9692 557911.5124 597201.0555 636490.5986 675780.1417

1380 1380 1380 1380 1380 1380 1380

6.5 7.5 8 8.5 9 9.5 10.5

2.3375 2.55 2.7625 2.975 3.1875 3.4 3.6125

3225.75 3519 3812.25 4105.5 4398.75 4692 4985.25

900 900 900 900 900 900 900

2903175 3167100 3431025 3694950 3958875 4222800 4486725

219971786.09 259796240.56 301657500.02 339835082.64 386000905.82 435000246.80 490830695.26

2199.72 2597.96 3016.58 3398.35 3860.01 4350.00 4908.31

3.49 2.93 2.50 2.15 1.87 1.65 1.46

11.76 7.39 4.82 3.25 2.25 1.59 1.15

12.43 8.04 5.39 3.72 2.64 1.91 1.41

0.30 0.21 0.15 0.12 0.09 0.07 0.05

0.05 0.03 0.02 0.02 0.01 0.01 0.01

0.47 0.33 0.24 0.18 0.14 0.10 0.0812.57 7.97 5.24 3.56 2.48 1.78 1.30

2349.08 1488.73 979.36 665.09 464.21 331.84 242.24

9260060.91 5868560.54 3860641. 10 2621776.53 1829935.34 1308108.41 954911.05

8519256.04 5399075.70 3551789. 82 2412034.40 1683540.51 1203459.74 878518.16

25296755.40 29876567.66 34690612.50 39081034.50 44390104.17 50025028.38 56445529.95

33816011.44 35275643.36 38242402.32 41493068.91 46073644.68 51228488.12 57324048.12

253787797.53 295071883.92 339899902.33 381328151.55 432074550.50 486228734.92 548154743.38

Excavation Suppor t Ratio, ESR.

Excavation category ESR

A 3-5

B 1.6

C 1.3

D 1

E 0.8

Length of rock bolt=[2+0.15B/ESR]

Permanent mine openings, water tunnels for hydro power (excluding high pressure penstocks),pilot tunnels, drifts

Storage rooms, water treatment plants, minor road andrailway tunnels, surge chambers, access tunnels.Power stations, major road and railway tunnels, civil

defence chambers, portal intersections.Underground nuclear power stations, railway stations,sports and public facilities, factories.

Excavation category

Temporary mine openings.

0.00E+00

5.00E+07

1.00E+08

1.50E+08

2.00E+08

2.50E+08

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

C o s

t i n R s .

Diameter(m)

Economic Diameter of HRT

Total Cost Operating Cost revenue Loss


5/6

CONSTRUCTION COST PER METER LE

Interest 8O&M 1Depreciation 2

Contingency 0.5Total 11.5


Shape of the tunnel

Diameter of tunnel m

Excavated Dia. m

Length of the tunnel m

Finished area of tunnel m2

Thickness of lining cm

Excavated Area of the tunnel m2

Volume of the tunnel m3

Allowance for over break m3

Unit rate of excavation( incl. of suport system) m3

Total Cost Rs.

2 Concreting

D-ShapeConcrete Grade

Area m2

Volume m3

Allowance for 15% over break

Total Cost of concreting Rs.

Reinforcement

Qty of steel [@ 50.00 kg/cum ] MT

Total Cost of reinforcement Rs.

Rock Bolts

Spacing m

Length of Rock bolt m

No. of rockbolts

Unit rate Rs.

Total cost of rock bolting Rs.

Steel Liner

Grade of Steel MS

Length m

Thickness mm

Quantity MT

Rate Rs

Total cost of steel liner Rs

Contact Grouting

Depth of consolidation grouting m



Consolidation Grouting

0.85 Depth of consolidation grouting m



Contact Grouting

Depth of grouting[ thickness+d in rock] m

Total depth m



Permanent supports

Size of Section

Spacing

Wt/m length kg

Perimeter m


Quantity MT

Rate Rs.

Cost Rs.

0.725 Providing precast Lugs

0.075 No along perimeter

0.15 No. along length

Fixed Annual Charges

0.75 0.79 0.83 0.88 0.92

4.50 4.75 5.00 5.25 5.50

4.8 5.0 5.3 5.6 5.8

4600 4600 4600 4600 4600

15.90 17.72 19.63 21.65 23.76

27.0 28.5 30.0 31.5 33.0

17.87 19.91 22.06 24.32 26.69

82202.40 91589.71 101484.44 111886.59 122796.17

92066.68 102580.47 113662.57 125312.98 137531.71

3573.00 3573.00 3573.00 3573.00 3573.00

328954256.26 366520020.09 406116365.75 447743293.24 491400802.56

M20 M20 M20 M20 M20

1.966 2.190 2.427 2.676 2.937

9042.56 10075.19 11163.65 12307.92 13508.02

1356.38 1511.28 1674.55 1846.19 2026.20

10398.94 11586.47 12838.20 14154.11 15534.22

30156924.56 33600770.89 37230771.06 41046925.10 45049232.99

452.1278045 503.7596834 558.1824747 615.3961784 675.4007944

12370668.86 13783368.7 15272430.69 16837854.84 18479641.14

2.00 2.00 2.00 2.00 2.00

2.90 2.95 3.00 3.05 3.10

20860.00 21765.00 22665.00 23570.00 24475.00

857.93 857.93 857.93 857.93 857.93

51899617.42 55084897.03 58334950.35 61675300.81 65093293.93

250 250 250 250 250

460 460 460 460 460

8 8 8 8 8

409.12 431.81 454.50 477.19 499.87

35000 35000 35000 35000 35000

14319217.96 15113318.34 15907418.71 16701519.09 17495619.46

6177.942 6692.770 7225.663 7776.620 8345.641

308.90 334.64 361.28 388.83 417.28

154448.5488 167319.2612 180641.5776 194415.4979 208641.0221

41457. 242 46191.557 51181.780 56427.913 61929 .954

2072.86 2309.58 2559.09 2821.40 3096.50

3109293.154 3464366.755 3838633.524 4232093.46 4644746.564

0.77 0.785 0.8 0.815 0.83

33141. 627 37645.662 42509. 702 47745.702 53365 .617

828.54 941.14 1062.74 1193.64 1334.14

1242810.994 1411712.336 1594113.829 1790463.818 2001210.648

ISHB ISHB ISHB ISHB ISHB

50 50 50 50 50

7.50 7.50 8.00 8.50 9.00

4612.5 4612.5 4920 5227.5 5535

230.625 230.625 246 261.375 276.75

35000 35000 35000 35000 35000

8071875 8071875 8610000 9148125 9686250

10 11 11 12 13

6151 6151 6561 6971 7381


6/6


Total number

Quantity

Rate Rs.

Cost Rs.


Size of Section

Spacing

Wt/m length kg

No.


Quantity MT

Rate Rs.

Cost Rs.


Thickness mm

Length provided m

Quantity cum

Rate Rs.

Cost Rs.


Length m

No./m m

Depth of hole m

Total length m

Rate Rs.

Cost Rs.

TOTAL CAPITAL COST(Rs.)

TOTAL CAPITAL COST(Rs. Lakhs) C_1

Energy Loss

Velocity m/s

Due to friction(Manning's)

Head Loss(darcy's) m

Trash Rack m

Entrance Loss m

Exit Loss mTotal Head Loss(As per Manning's) m

Power kW kW

Energy Loss kwh

Revenue Loss Rs.

Operation Cost

Total Cost Rs.

Cpst power Loss+Concrete

0.75 0.79 0.83 0.88 0.92

61510 67661 72171 83652 95953

501.6909375 551.8600313 588.6447188 682.286625 782.6166563

2900 2900 2900 2900 2900

1454903.719 1600394.091 1707069.684 1978631.213 2269588.303

ISHB ISHB ISHB ISHB ISHB

50 50 50 50 50

11 11.5 12 12.5 13

4612.5 4612.5 4920 5227.5 5535

2536.875 2652.1875 2952 3267.1875 3597.75

35000 35000 35000 35000 35000

88790625 92826562.5 103320000 114351562.5 125921250

50 50 50 50 50

690 690 690 690 690

246.58 260.12 273.67 287.22 300.77

2900 2900 2900 2900 2900

715069.6849 754359.228 793648.7711 832938.3142 872227.8574

1380 1380 1380 1380 1380

11 11.5 12 12.5 13

3.825 4.0375 4.25 4.4625 4.675

5278.5 5571.75 5865 6158.25 6451.5

900 900 900 900 900

4750650 5014575 5278500 5542425 5806350

545990361.16 597413539.21 658184543.96 722075547.87 788928854.47

5459.90 5974.14 6581.85 7220.76 7889.29

1.30 1.17 1.05 0.96 0.87

0.85 0.64 0.48 0.37 0.29

1.06 0.81 0.63 0.49 0.39

0.04 0.03 0.03 0.02 0.02

0.01 0.01 0.00 0.00 0.00

0.07 0.05 0.04 0.04 0.030.96 0.73 0.56 0.44 0.34

180.15 136.21 104.54 81.31 64.02

710152 .90 536955.02 412080. 87 320519.82 252355.30

653340 .67 493998.61 379114. 40 294878.23 232166.88

62788891.53 68702557.01 75691222.55 83038688.01 90726818.26

63442232.21 69196555.62 76070336.95 83333566.24 90958985.14

609432593.37 666610094.83 734254880.91 805409114.11 879887839.61

tunnel design-economical analysis

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