Authors: Duff, DJ; Valley,B; Milkereit, B; McGaughey, J


DOI https://doi.org/10.36487/ACG_rep/1108_07_Duff

Cite As:
Duff, DJ, Valley,B, Milkereit, B & McGaughey, J 2011, 'Rock mass response to deep mining induced stress—research and tools development at the CEMI, Canada', in Y Potvin (ed.), Strategic versus Tactical 2011: Proceedings of the Fourth International Seminar on Strategic versus Tactical Approaches in Mining, Australian Centre for Geomechanics, Perth, pp. 73-84, https://doi.org/10.36487/ACG_rep/1108_07_Duff

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Abstract:
Mining deeper is needed in order to sustain production in many established camps worldwide, but this comes with elevated risk due to, among other things, high stresses. In these conditions, the interactions between stress and structure become critical, as does the state of the rock mass itself and how it’s impacted by the process of mining. Research leading to optimised mine designs and an improved geomechanics outcome is needed. Specifically, rock mass system stiffness and its effect on the stability of structures, the performance of our ground support, and thereby the vulnerability of our excavations is critical to consider, but is not easily measured or understood. This is despite its fundamental importance. At a strategic level, work needs to focus on an integrated approach comprised of enhanced early site characterisation techniques/procedures coupled with rock mass behaviour monitoring in response to the mining process itself. Recognition of the inherently dynamic, rather than static, conditions which prevail in deep mines is essential to ensuring that strategic goals are met through employment of appropriate tactics. This paper will discuss the difficulties and hazards associated with unpredictable rock mass behaviour in deep mines and examine in some detail various tactical research and tool development approaches being undertaken to lower the risk associated with them.

References:
Bewick, R.P. (2011) Fault Rupture mechanics: Assessment and Understanding of Fault Behaviour using a Micro-Mechanical Approach, PhD Research Proposal, University of Toronto.
Cai, M. and Duff, D.J. (2010) Development of an Interactive Tool for Rockburst Support Design, internal CEMI proposal for new guidelines and tool development needed in support of practitioners dealing with dynamic ground support issues in underground mines.
Carter, T. and Bewick, R.P. (2011) Structural Geology Guidelines for Aiding Characterisation of Deep Mining Fault Behaviour (in preparation), Golder Associates Canada, in preparation.
Fookes, P.G., Baynes, J. and Hutchinson, J.N. (2000) Total Geological History: A model approach to the anticipation, observation and understanding of site conditions, in Proceedings of GeoEng2000: An International Conference on Geotechnical and Geological Engineering, Melbourne, Australia, Vol. 1, pp. 370–460.
Kaiser, P.K. (1996) In Canadian Rockburst Research Program 1990–1995 Handbook, A comprehensive summary of five years of rockburst research in hardrock mines, C.B. Graham (ed), CAMIRO Mining Division Vol. 1, 2, 3.
Kaiser, P.K., Tannant, D.D. and McCreath, D.R. (1995) Drift support in-prone ground, in Proceedings from the 97th CIM Annual General Meeting, CIM, pp. 277–288.
Kaiser, P.K., Diederichs, M.S. and Valley, B. (2011) Guidelines for GeoRisk-Based Mine Design – CEMI guidelines document (in preparation).
McGaughey, J. (2011) Forecasting Ground fall Hazard Related to Fault-Slip Rockbursting at Creighton Mine, Sudbury, Report of work to CEMI, Mira Geoscience.
Milkereit, B., Duff, D.J., Kaiser, P.K. and Schmitt, D.R. (2010) Integrated Geophysical Monitoring Systems for Deep Mines,Invited paper at2010 AGU Conference, San Francisco.
O’Conner, C., Cotesta, L. and Brummer, R. (2010) Non-Linear Modelling Calibration Process for Vale Nickel Mines Ontario Division, in Proceedings Fifth International Seminar on Deep and High Stress Mining (Deep Mining 2010), M. Van Sint Jan and
Y. Potvin (eds), 6–8 October 2010, Santiago, Chile, Australian Centre for Geomechanics, Perth, pp. 521–536.
Steffen, O. (2007) Mine planning — its relationship to risk management, in ACG Newsletter, Australian Centre for Geomechanics, Perth, December 2007.
Valley, B. and Duff, D.J. (2011) Phase2Stat – Probabilistic Analysis in Phase2Stat, in Spring 2011 Rocscience Inc. Newsletter, viewed June 2011, .




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