Goldex is a sublevel open stoping mine near Val-d'Or in northwestern Quebec. The orebody will be extracted in stages, using a novel mining method, resulting in a single stope with the dimensions of 450 m on strike, 250 m in height and up to a width of 120 m. A microseismic monitoring system was designed to monitor the profile of the large stopes and the extent of overbreak around the stopes. This paper discusses the design of the seismic system, and the results of the seismic monitoring with regard to observations of stope performance. In particular, the paper discusses how the seismic source parameter Apparent Stress can be used to identify areas of active rock mass fracturing.
Goldex Mine is an underground gold mine located in the prolific Val-d'Or mining district of northwestern Québec, Canada. Because of its shape and low grade, the Goldex deposit is mined using a hybrid mining method between block caving, long hole stoping and shrinkage. Commercial production began in the middle 2008 at a rate of 7,000 tonnes per day. This paper will explain the mining method and will focus on results of the first mining stages compared to what was expected in the feasibility study.
Goldex is a sublevel open stoping mine near Val-d'Or in northwestern Quebec. The orebody will be extracted in stages, using a novel mining method, resulting in a single stope with the dimensions of 450 m on strike, 250 m in height and up to a width of 120 m. A microseismic monitoring system was designed to monitor the profile of the large stopes and the extent of overbreak around the stopes. This paper discusses the design of the seismic system, and the results of the seismic monitoring with regard to observations of stope performance. In particular, the paper discusses how the seismic source parameter Apparent Stress can be used to identify areas of active rock mass fracturing.
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