Dr. Patrick Andrieux
Andrieux & Associates Geomechanics Consulting
Synopsis
As extraction ratios increase and as mining progresses to greater depths higher stress magnitudes develop, which can lead to significant ground control challenges. Stresses can eventually reach levels that preclude safe mining operations. At that stage destressing can become an option. Destressing in this context can be defined as cutting the stress path “upstream” of reserves too highly stressed for safe mining, to divert the stress elsewhere and then mine in the stress shadow thus created.
The webinar will address the following aspects:
• The difference between preconditioning and destressing
• The mechanics of destressing
• The description of the empirical Destressability Index methodology used for the design of several destress blasts since 2005
• The presentation of an instrumented case study
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Patrick Andrieux is a mining engineer with forty years of experience at operating mine sites (both on surface and underground), as well as in research and development, instrumentation, technical services and support, and consulting.
Patrick is currently Principal Engineer at A2GC, a Montreal-based Canadian consulting firm established in 2015, which offers technical services in the fields of geomechanics, ground control, mine design, numerical modelling, seismicity and drilling and blasting to local and international mining, construction and civil engineering clients.
Since 2019 he is Adjunct Professor at Laval University in Quebec City in the Department of Mining, Metallurgical and Materials Engineering.
Patrick is a Registered Professional Engineer in the Canadian provinces of Quebec and Ontario and in the Northwest Territories and Nunavut, as well as a Designated Consulting Engineer in the province of Ontario.
Негізгі бет The Destressability Index for the Design of Large-Scale Confined Destress Blasts
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