At Troy Mine, a progression of pillar failures led to surface subsidence. Itasca back-analyzed this behavior, using a large-scale numerical model, to understand the level of stresses and failure mechanism leading to the collapse of some pillars. Forward predictions on pillar stability in another nearby deposit, in a similar geomechanical setting, were also done.
The 56th US Rock Mechanics / Geomechanics Symposium covers all aspects of rock mechanics, geomechanics, and rock engineering.
Dr. Lemos is a research engineer in the Dams Department at Laboratorio Nacional de Engenharia Civil. He has been involved in the development and application of numerical models (finite element and distinct element) for analysis of various rock mechanics problems associated with dam foundations, mines and tunnels as well as for earthquake analysis of masonry structures.
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