某铅锌矿地压活动数值模拟及防控措施

Numerical Simulation and Control Measures of Ground Pressure Activity in a Lead-zinc Mine

基于某铅锌矿地下开采技术条件与现场地压活动情况,采用PHASE2软件对矿山典型地质剖面进行二维数值模拟与分析,探究由开采活动引起的地压活动规律。研究发现:不同矿体之间的天然隔离矿柱是应力集中最明显的区域,且上盘45°方向的移动变形量最大。据此,提出了有针对性的地压防控措施,为矿山未来地压监测系统建设及地质灾害防控提供参考。

Based on the underground mining technical conditions and field ground pressure activities of a lead-zinc mine,two-dimensional numerical simulation and analysis of typical geological sections of the mine were carried out by PHASE2 software to explore the law of ground pressure activities generated by mining activities.It is found that the natural isolated pillars between different ore bodies are the areas with the most obvious stress concentration,and the moving deformation in the 45°direction of the upper plate is the largest.Accordingly,targeted ground pressure prevention and control measures are put forward to pro⁃vide reference for the construction of mine future ground pressure monitoring system and the control of geo⁃logical disasters.