chacha final year project presentation
TRANSCRIPT
![Page 1: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/1.jpg)
FINAL YEAR PROJECT II PRESENTATIONMM 499
PROJECT TITTLE:“ASSESSMENT OF EFFICIENCY OF THE CURRENT MINE DEVELOPMENT CYCLES
AT BULYANHULU UNDERGROUND MINE”
STUDENT NAME: CHACHA, GodsonREGIS. NUMBER: 2010-04-02903PROGRAMME: MINING ENGINEERINGACADEMIC YEAR: 2013/14SUPERVISOR: Dr. MAFWENGA
S.GWAMAKA
![Page 2: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/2.jpg)
BACKGROUND OF THE PROBLEMMine development involves making
excavations necessary to access the orebody and support mining operations.
Excavation dimensions depends on mining method used. It undertaken to minimize amount of waste to be excavated to accommodate equipments/materials and services that go along it
Development of these openings lags behind scheduled targets.
![Page 3: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/3.jpg)
PROBLEM STATEMENT Bulyanhulu gold mine is currently
experiencing problems in mine development progress in which, the designed monthly 530m mine development advance is not being met.
This results into lost future production, which then affects overall profitability of the mine.
This causes longterm impacts on future production of gold.
![Page 4: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/4.jpg)
PROJECT OBJECTIVES
GENERAL OBJECTIVE
To assess the effectiveness of the mine development activities in view of achieving the planned monthly target of horizontal development advance
![Page 5: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/5.jpg)
Cont.….SPECIFIC OBJECTIVES
To assess the activity duration of various mine development cycles.
To identify and quantify the effect of each of activity taking place in mine development area using simulation.
![Page 6: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/6.jpg)
SCOPE OF THE PROJECTThis project based on mine development
sections to determine constraints in development rate and mine cycles and their effects to the monthly plan target
The project concentrated on activities carried on during mine development. (TIME STUDY)
![Page 7: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/7.jpg)
METHODOLOGYAdditional Literature reviewConsultationSite survey and Data collection Data analysis
![Page 8: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/8.jpg)
SITE VISTING AND DATA COLLECTION
The project based on waste development headings , which is in deep levels about 1.2km where excavation size of the headings is 5m width by 5m height.
Data collected in horizontal development headings.
![Page 9: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/9.jpg)
Cont...Time for development activities
![Page 10: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/10.jpg)
Cont…Mucking and haulage time with distance to the
dumping area
![Page 11: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/11.jpg)
DATA ANALYSISSTATISTICAL ANALYSISThe data was analyzed by EASYFIT
SOFTWARE to determine behaviour of each activity duration and it statistic parameters.
GPSS/H SIMULATIONThe cumulative probability function
obtained is used in GPSS/H simulation.
![Page 12: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/12.jpg)
DRILLING
![Page 13: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/13.jpg)
CHARGING
![Page 14: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/14.jpg)
BLASTING
![Page 15: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/15.jpg)
VENTILATION
![Page 16: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/16.jpg)
MUCKING
![Page 17: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/17.jpg)
EXTENSION OF UTILITIES
![Page 18: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/18.jpg)
BOLTING
![Page 19: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/19.jpg)
STATISTICAL PARAMETERS
![Page 20: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/20.jpg)
CUMULATIVE PROBABILITY FUNCTION
![Page 21: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/21.jpg)
GPSS/SIMULATION RESULTSSIMULATIONThe Cumulative probability helps in GPSS/H
Simulation to obtained the monthly Advanced metres
![Page 22: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/22.jpg)
THE INPUT DATACont…
![Page 23: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/23.jpg)
Cont…THE OUTPUT DATA
![Page 24: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/24.jpg)
![Page 25: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/25.jpg)
DISCUSSION OF RESULTSFrom statistical analysis the problem
observed on mucking, drilling, bolting, extension of utilities, and charging time which shown high standard deviation and dispersion.
From Simulation results, monthly planned advance metres obtained is 483m which should a target according to the current activity duration.
![Page 26: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/26.jpg)
Cont....Traffic on ramp (Super-ramp and Ramp
A) and queuing at loading and dumping point (1-3980) leads to increase cycle time of haulage which affect mucking.
Mining delays such as Equipment breakdown, Skilled Labor Shortage, Ventilation, Electric Power, Face not clean, Water and flooding at the faces, materials being far from the face to be charged.
![Page 27: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/27.jpg)
CONCLUSIONAT 3980 LEVEL Queue at tipping point which increase
mucking and haulage duration and leads to affect other activities.
Since there is only one tipping point (1-3980) which create queue during dumping process hence increases the mucking and haulage time.
![Page 28: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/28.jpg)
Cont…BELOW 3980 LEVEL (DEEP LEVELS)Because of Truck system used at
Bulyanhulu, cycle time increase due to equipment breakdown at super-ramp (3800 to 3980 level) which only one truck can pass at a time.
Flooding of underground workings mainly due to the frequent breakdowns of pumps (kombi pumps) which stop of activities.
![Page 29: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/29.jpg)
Cont…Operational and service factors such as
Operator efficiency and experience, Materials storage being far away such as explosives, leaking of vent tubes, Remucks and loading point are far away from the face.
![Page 30: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/30.jpg)
RECOMMENDATIONSTo install conveyor belt at super-ramp
from deep levels to (1-3980).
Perimeter blasting should be introduced to reduce overbreak, minimize ground support requirement and scaling.
![Page 31: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/31.jpg)
Cont…Provide promotion and motivation to the
operators.
To introduce roof bolter this will reduce bolting time to enhance development.
To introduce another tipping point at 1-3980 to reduce queuing at rock breaker.
![Page 32: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/32.jpg)
Cont…Improve ventilation especially at deep
levels of the mine includes replacement of leaking vents to ensure adequate air supply to the working areas.
Adequate training to the operators should be given to make them more efficient to will follow SOPs.
![Page 33: Chacha Final Year Project presentation](https://reader034.vdocuments.site/reader034/viewer/2022042619/58f1efd01a28abb3678b45d7/html5/thumbnails/33.jpg)
THANK YOU ALL