Underground

Author(s): 
William C Joughin
Category: 
Geotechnical

A method for risk-based design under high stress conditions is described in this paper. Probabilistic methods of analysis are applied to stress modelling to determine the probability of exceeding a given depth of failure. Suggestions are provided for dealing with geotechnical uncertainty. The Read more... about Dealing with uncertainty and risk in the design of deep and high stress mining excavations

Author(s): 
Andrea Russo, Esteban Hormazabal
Category: 
Rock Mechanics

Porphyry copper deposits are characterized by a rock mass with a stockwork of mineralized veins and veinlets affecting the strength behavior of the intact rock and rock mass. The observation of tested samples and blocks at draw points pointed out that veinlets and veins have a high participation Read more... about A methodology to select valid results from Lab tests to estimate properties of intact rock with microdefects

Author(s): 
C.M. Linklater, S. Ogier-Halim, J Chapman, M. Tyler and G. Hill
Category: 
Water Management

The current BHP Billiton Olympic Dam (OD) operation comprises underground workings (tunnels, stopes) and a number of surface facilities including the TSF and processing plant.  Mined out stopes in the underground workings are backfilled using cement aggregate fill which includes a portion of Read more... about Post-Closure Groundwater Impact Assessment for the Underground Mining Operation at Olympic Dam

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