矿山开采过程地压活动综合评价分析

以某金矿为研究对象，基于微震监测技术建立地压监测系统，对波速校正后定位结果进行验证，显示定位误差为3.9 m，较好地满足了安全监测需求，基于监测数据对矿山地压活动进行综合评价。监测结果表明，微震事件集中区域与生产集中区相吻合，对微震事件活动率、能量指数和累积视体积进行时间序列分析，揭示了岩体内部应力能量演化规律，并对微震事件参数幂律特征进行分析。研究结果表明，岩体视在刚度、受力水平均较小，微震事件以小震级为主。最终结合微震各参数分析结果，对地压活动进行综合评价，研究成果对类似矿山地压活动评价分析具有一定借鉴意义。

Investigation on comprehensive evaluation and analysis of mine ground pressure activities during mining process

A ground pressure monitoring system was established based on microseismic monitoring technology to evaluate the ground pressure activities in a gold mine comprehensively. The wave velocity correction results of the monitoring system were verified, and the positioning error was 3.9 m, which meted the requirements of safety monitoring. The concentration area of microseismic events coincided with the production concentration area. The time series analysis of microseismic event activity rate, energy index, and cumulative apparent volume revealed the evolution characteristic of stress-energy in a rock mass., It edshowed that the apparent stiffness and stress level of the rock body hassmall, and microseismic events of small magnitude were the main ones through the analysis of power-law characteristics of microseismic event parameters. A comprehensive evaluation of ground pressure activity was carried out combined with the analysis results of microseismic parameters finally. The research results were of certain reference significance for the evaluation of ground pressure activity in similar mines.