Mutambo, Victor та Mukuka, Moses (2023) GEOMECHANICS INFLUENCE ON MINING BLOCKS IN SEISMICALLY ACTIVE AREAS AT MUFULIRA MINE DEEPS SECTION. UNIVERSITAS Publishing. с. 58-73.

Text 3_ Victor Mutambo.pdf Download(1MB)

English abstract

Mufulira mine has been in operation since 1933. The mine is situated on the copperbelt region of Zambia. It is predominantly rich in copper and cobalt mineralization. Due to increase in mine depth that currently stands at 1,557m, the mine has been experiencing geomechanical challenges such as rock failures due to excessive stress changes around some mining blocks. This has necessitated changes in mining sequences to suit the present geomechanical conditions such as development of de-stressing cross-cuts between 62 and 64 blocks. Additionally, blocks have been subjected to shotcrete support method to prevent possible rockbursts/rock falls which can endanger safety of men working in these areas. This study applied geotechnical investigation and geological field mapping methods to understand the Geomechanics mechanisms controlling the rock burst prone mining blocks at Mufulira mine. Damage mapping conducted in the footwall drives, cross-cuts and mining drives excavations indicate that there is a changing stress loading as one moves away from the retreating stope face to the east. The rockmass damage predominated by spalling process usually initiates from the northern top corner of the excavation drive.

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