Authors: Esterhuizen, HCJ

Open access courtesy of:

Cite As:
Esterhuizen, HCJ 2018, 'Controlling the effects of stress and seismicity in a sublevel caving operation', in Y Potvin & J Jakubec (eds), Proceedings of the Fourth International Symposium on Block and Sublevel Caving, Australian Centre for Geomechanics, Perth, pp. 607-622.

Download citation as:   ris   bibtex   endnote   text   Zotero


Abstract:
The Ernest Henry mine (EHM) in Queensland, Australia is developed to a depth of just over 1 km, and current active production cave levels have reached a depth of 730 m. Caving started just below the pit floor at a depth of 535 m, and is progressing deeper. The impact of stress and seismicity with increasing depth requires ongoing review and re-assessment of established practices and standards, and the implementation of new measures where required. Adverse effects of stress and the associated seismicity can have a significant impact on the safety, production and morale at a mine site. At EHM, an inclined sublevel caving operation, the geometry of the orebody and increasing depth provides for some interesting stress and seismic impacts, which are actively monitored and assessed. This paper outlines some of the observed rock mass responses, the impacts these had, and ongoing measures implemented to provide stability in an increasingly challenging environment. Keywords: sublevel caving, stress, seismicity

Keywords:

References:
Beck Engineering 2017, data from non-linear modelling finite element numerical modelling conducted for Ernest Henry mine, Beck Engineering, Chatswood West.
Heal, D, Potvin, Y & Hudyma, M 2006, ‘Evaluating rockburst damage potential in underground mining’, in DP Yale, SC Holtz, C Breeds & U Ozbay (eds), Proceedings of the 41st US Symposium on Rock Mechanics, American Rock Mechanics Association, Alexandria.
Hudyma, M & Potvin, Y 2004, ‘Seismic hazard in Western Australian mines’, Journal of The South African Institute of Mining and Metallurgy, vol. 104, no. 5, pp. 265–276.
Miller, B 2017, unpublished internal mine presentation on Ernest Henry mine geology, Ernest Henry Mining, Cloncurry.




© Copyright 2018, Australian Centre for Geomechanics (ACG), The University of Western Australia. All rights reserved.
Please direct any queries to or error reports to repository-acg@uwa.edu.au