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Determination of optimum slope design for northern boxcut in zone 5 Khoemacau copper mine, Botswana

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dc.contributor.author Gaopatwe, Maipelo
dc.contributor.author Kgopana, Tefo
dc.contributor.author Verma, Rahul
dc.contributor.author Molebatsi, Bame
dc.date.accessioned 2022-01-28T07:18:28Z
dc.date.available 2022-01-28T07:18:28Z
dc.date.issued 2021-02-22
dc.identifier.citation Gaopatwe, M. et.al. (2021) Determination of optimum slope design for northern boxcut in zone 5 Khoemacau copper mine, Botswana. Open Journal of Geology , 11(2), 38-48. https://doi.org/10.4236/ojg.2021.112003 en_US
dc.identifier.issn 2161-7589
dc.identifier.uri http://repository.biust.ac.bw/handle/123456789/392
dc.description.abstract An optimum design of box cuts in soil formations is very crucial in order to obviate the major risk factors originating from the collapse of sidewalls and flooding of excavations during storm rainfall. The present paper aims to present a holistic classification of the Kalahari Formation stratigraphy in Zone 5 and define engineering properties of each lithological unit, in order to establish a safe working design. For the present objectives, collection of data was carried out through logging core from selected geotechnical boreholes drilled within vicinity of the proposed Northern mine box cut. Hydrogeological assessments and feasibility studies within the purview of study region were also considered. Geotechnical logging parameters gathered on site were derived from the Rock Mass Rating system (RMR) for design requirements [1]. Input parameters and material characteristics taken from laboratory test results provided by KCM were incorporated in the analysis. The box cut slopes were modelled in “Rocscience software” for evaluation of safety factor using “limit equilibrium method”. Slope optimization required the slope surface to be as steep as possible while maintaining an adequate factor of safety ranging from 1.5 - 1.8. For the box cut design with optimum safety, the recommended parameters are: stable slope angle—35° - 40°; ramp angle—8°, depth of pit—60 meters; bench width—4.9 meters and the bench length—13.25 meters. en_US
dc.language.iso en en_US
dc.publisher Scientific Research Publishing en_US
dc.subject Boxcut slope en_US
dc.subject Slope stability en_US
dc.subject Finite element analysis en_US
dc.subject Limit equilibrium analysis en_US
dc.subject Rocscience software en_US
dc.title Determination of optimum slope design for northern boxcut in zone 5 Khoemacau copper mine, Botswana en_US
dc.description.level phd en_US
dc.description.accessibility unrestricted en_US
dc.description.department mge en_US


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