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Published in:
2019 | OriginalPaper | Chapter
Numerical Simulations of Geomechanical State of Rock Mass Prior to Seismic Events Occurrence—Case Study from a Polish Copper Mine Aided by FEM 3D Approach
Authors : W. M. Pytel, P. P. Mertuszka, T. Jones, H. Paprocki
Published in: Proceedings of the 27th International Symposium on Mine Planning and Equipment Selection - MPES 2018
Publisher: Springer International Publishing
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Abstract
The biggest risk to operations in Polish copper is high-energy seismic tremors where hypocenters are located within the main roof strata. These phenomena occur often in the areas which are virtually free of tectonic disturbances. They are extremely difficult to both predict and analyse due to their short duration and unpredictable time of occurrence. The objective of the presented analysis was to determine the overall stress/deformation states within the considered mining panel prior to the selected archival seismic event and afterwards to judge how the progress of mining could affect the occurrence of instability in the roof strata rock mass. Geomechanical problem solution and results visualization were based on the NEi/NASTRAN computer program code utilizing FEM in three dimensions.