TY - GEN
T1 - Hazard assessment when mining orebodies under shear loading
AU - Suorineni, F. T.
AU - Kaiser, P. K.
AU - Delgado, J.
PY - 2007/12/1
Y1 - 2007/12/1
N2 - This paper presents causes for elevated hazards in orebodies with inclined far-field stresses and shows that numerical and empirical approaches used in the analysis of orebodies under normal far-field stress loading conditions can give misleading conclusions when applied to sheared orebodies. Example procedures for identifying potential hazards in sheared orebodies and planning for such hazards are given using the F-Zone of Campbell Red Lake Mine. The F-Zone of the Campbell Red Lake Mine is not continuous, has offsets and is under shear loading and thus is unique in the study of orebodies under shear loading. The primary objective of this study was to provide guidelines for the safe and economic extraction of remnant sill and boxhole pillars in the F-Zone. The guidelines were to include identification of safe and economic distances of drifts (drift layout) for remote access to the orebody. A Drifts@Risk approach developed for drifting in stressed ground at the Laurentian University Geomechanics Research Centre was utilized to establish setbacks for future developments and the identification of the optimum drift layout.
AB - This paper presents causes for elevated hazards in orebodies with inclined far-field stresses and shows that numerical and empirical approaches used in the analysis of orebodies under normal far-field stress loading conditions can give misleading conclusions when applied to sheared orebodies. Example procedures for identifying potential hazards in sheared orebodies and planning for such hazards are given using the F-Zone of Campbell Red Lake Mine. The F-Zone of the Campbell Red Lake Mine is not continuous, has offsets and is under shear loading and thus is unique in the study of orebodies under shear loading. The primary objective of this study was to provide guidelines for the safe and economic extraction of remnant sill and boxhole pillars in the F-Zone. The guidelines were to include identification of safe and economic distances of drifts (drift layout) for remote access to the orebody. A Drifts@Risk approach developed for drifting in stressed ground at the Laurentian University Geomechanics Research Centre was utilized to establish setbacks for future developments and the identification of the optimum drift layout.
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U2 - 10.1201/noe0415444019-c171
DO - 10.1201/noe0415444019-c171
M3 - Conference contribution
AN - SCOPUS:56149084073
SN - 0415444012
SN - 9780415444019
T3 - Proceedings of the 1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands
SP - 1377
EP - 1384
BT - Proceedings of the 1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands
PB - Taylor and Francis/ Balkema
T2 - 1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands
Y2 - 27 May 2007 through 31 May 2007
ER -