基于FEM三维方法的震波迹象前岩体地质力学状态数值模拟--以波兰某铜矿为例
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
摘要：
波兰铜矿运营面临的最大风险是高能量地震，震源位于主顶板地层内。这些现象往往发生在几乎没有构造扰动的地区。由于它们持续时间短，发生时间不可预测，因此很难预测和分析。所提出的分析的目的是确定所选档案震波迹象之前所考虑的采矿盘区内的总体应力/变形状态，然后判断采矿进度如何影响顶板岩层中不稳定性的发生。地质力学问题的解决方案和结果可视化的基础上，NEi-NASTRAN计算机程序代码，利用有限元在三维。
英文摘要：
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 analyze 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.
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