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Design of Optimal Slope Parameters for the Proposed Kobeda Pit at Gold Fields Ghana Limited, Tarkwa Mine

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dc.contributor.author Balegha, Mohammed Mwene Soma
dc.date.accessioned 2022-06-22T14:46:36Z
dc.date.available 2022-06-22T14:46:36Z
dc.date.issued 2019-05
dc.identifier.citation Balegha, M.M.S. (2019). Design of Optimal Slope Parameters for the Proposed Kobeda Pit at Gold Fields Ghana Limited, Tarkwa Mine. MSc. Thesis. University of Mines and Technology. en_US
dc.identifier.uri http://localhost:8080/xmlui/handle/123456789/332
dc.description ix,147p; ill en_US
dc.description.abstract Tarkwa Gold Mine (TGM) is depleting its reserves to the east of the mine. It has, as a result embarked on vigorous near mine exploratory work to the west of the concession for reserve generation. Results indicate gold mineralisation of economic interest. TGM seeks to provide slope design that would satisfy shareholders and employees in the context of safety, ore recovery, and financial returns for the proposed Kobeda Pit. Rock Mass Rating (RMR) and subsequent adjustment to obtain the Mining Rock Mass Rating (MRMR) was done for rock mass characterisation. The rock mass ratings for the various geotechnical zones ranged from 40.91 to 67.72 and rated from fair to very good. Kinematic stability analyses were performed for all the three design sectors using stereographic techniques to determine the failure modes that are kinematically possible in bench and/or multi-bench scale slopes. Multi-bench scale planar and wedge failures are kinematically possible in all sectors. Limit equilibrium analysis gave factors of safety that exceeded the minimum acceptable factor of safety of 1.05 for completely weathered material and 1.20 for fresh rock. The probability of failure was however less than 5%. Pit wall architecture for the geotechnical domains were 8 meters, 18 meters, 75 degrees for the berm width, bench height, and bench face angle respectively. Indicative overall slope angles fell between 50.02 to 59.21 degrees and rated from fair to very good. en_US
dc.language.iso en en_US
dc.publisher University of Mines and Technology en_US
dc.subject Rock Mass Rating en_US
dc.subject Mining Rock Mass Rating en_US
dc.subject Mining industry en_US
dc.subject Mining techniques en_US
dc.subject Minerals economy en_US
dc.title Design of Optimal Slope Parameters for the Proposed Kobeda Pit at Gold Fields Ghana Limited, Tarkwa Mine en_US
dc.type Thesis en_US


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