Durrheim, RJHaile, ARoberts, MKCSchweitzer, JKSpottiswoode, SMKlokow, JW2007-01-122007-06-072007-01-122007-06-071998-04-15Durrheim, RJ, et al. 1998. Violent failure of a remnant in a deep South African gold mine. Tectonophysics, vol 289, 3 January, pp 105-1160040-1951http://hdl.handle.net/10204/1410http://hdl.handle.net/10204/1410The violent failure of a peninsular remnant at a depth of 2300 m below surface occurred in a mine in the Carletonville Goldfield of South Africa, severely damaging a stope mining the Ventersdorp Contact Reef (VCR). At the rockburst site the VCR is 1-2 m thick with a lava hanging wall and quartzite/conglomerate footwall. The remnant had been formed as the result of a fault and 'roll' encountered during mining. Observations at the rockburst site led the authors to conclude that the seismic event, with local magnitude of 2.1, resulted from failure of the remnant with attendant movement into the workings. The event could not be explained by a single shear slip. Two different damage mechanisms were identified. Firstly, the face and footwall on the east side of the remnant were violently ejected into the void between the original face and first line of timber packs following failure and dilation of the remnant and its foundation. Secondly, the hanging wall on the south side of the remnant fragmented and collapsed when subjected to intense seismic shaking. This response was due to the presence of a bedding-parallel fault and calcite-coated joints in the vicinity of a 'roll'. The stope support system failed to contain the seismically fragmented rock.3585547 bytesapplication/pdfenCopyright: 1998 Elsevier Science BVMining induced seismicityPillar designRock engineeringGeophysicsRock burstsArticleDurrheim, R., Haile, A., Roberts, M., Schweitzer, J., Spottiswoode, S., & Klokow, J. (1998). Violent failure of a remnant in a deep South African gold mine. http://hdl.handle.net/10204/1410Durrheim, RJ, A Haile, MKC Roberts, JK Schweitzer, SM Spottiswoode, and JW Klokow "Violent failure of a remnant in a deep South African gold mine." (1998) http://hdl.handle.net/10204/1410Durrheim R, Haile A, Roberts M, Schweitzer J, Spottiswoode S, Klokow J. Violent failure of a remnant in a deep South African gold mine. 1998; http://hdl.handle.net/10204/1410.TY - Article AU - Durrheim, RJ AU - Haile, A AU - Roberts, MKC AU - Schweitzer, JK AU - Spottiswoode, SM AU - Klokow, JW AB - The violent failure of a peninsular remnant at a depth of 2300 m below surface occurred in a mine in the Carletonville Goldfield of South Africa, severely damaging a stope mining the Ventersdorp Contact Reef (VCR). At the rockburst site the VCR is 1-2 m thick with a lava hanging wall and quartzite/conglomerate footwall. The remnant had been formed as the result of a fault and 'roll' encountered during mining. Observations at the rockburst site led the authors to conclude that the seismic event, with local magnitude of 2.1, resulted from failure of the remnant with attendant movement into the workings. The event could not be explained by a single shear slip. Two different damage mechanisms were identified. Firstly, the face and footwall on the east side of the remnant were violently ejected into the void between the original face and first line of timber packs following failure and dilation of the remnant and its foundation. Secondly, the hanging wall on the south side of the remnant fragmented and collapsed when subjected to intense seismic shaking. This response was due to the presence of a bedding-parallel fault and calcite-coated joints in the vicinity of a 'roll'. The stope support system failed to contain the seismically fragmented rock. DA - 1998-04-15 DB - ResearchSpace DP - CSIR KW - Mining induced seismicity KW - Pillar design KW - Rock engineering KW - Geophysics KW - Rock bursts LK - https://researchspace.csir.co.za PY - 1998 SM - 0040-1951 T1 - Violent failure of a remnant in a deep South African gold mine TI - Violent failure of a remnant in a deep South African gold mine UR - http://hdl.handle.net/10204/1410 ER -