Authors: Bungard, GP; Gleeson, A; Basson, FRP
Editors: Dight, PM
Conference: First Asia Pacific Slope Stability in Mining Conference, 6–8 September, Brisbane
Published: Australian Centre for Geomechanics, Proceedings of the First Asia Pacific Slope Stability in Mining Conference, pp.239-252, Perth
Kalgoorlie Consolidated Gold Mines (KCGM) has recently completed a slope optimisation study to safely steepen the western wall of the Golden Pike cutback. The optimised slope design exceeds 700 m in height, with a maximum overall slope angle of 52°, putting it near the limit of global experience. To build a case for a steeper slope design, KCGM undertook a campaign of data collection and analysis, which culminated in the successful completion of batter steepening trials within selected geotechnical domains. The optimised design incorporates a 75/90° bi-angle batter face, to achieve steeper inter ramp slopes while maintaining sufficient berm catch capacity. This paper summarises the work undertaken to support the steepened slope design and the future geotechnical engineering inputs required for successful completion.
Keywords: slope optimisation, slope steepening, data collection, batter trial, bi-angle batter
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