摘要
针对方山矿新井11041工作面存在的冲击地压预测难的问题,采用高精度微地震监测技术对冲击矿压的危险性进行正确的评价和预测预报。研究结果表明:工作面超前支承压力影响范围小于60 m,侧向支承压力分布峰值位置与煤壁距离大于12 m;基本顶初次垮落步距为18 m。煤矿微震监测系统可以对围岩应力进行实时动态监测,对保障工作面安全回采起到了一定的预警作用。
Aiming at predicting rock or coal outburst on 11041 working face of Fangshan Mine,high-precision micro seismic monitoring technique was applied to evaluate and forecast the danger of rock burst. The results show that the influence range of advanced abutment pressure is less than 60 m while the distance between peak position of the side abutment pressure and the coal wall is more than 12 m;first caving distance of main roof is 18 m; micro seismic monitoring system can be carried out on the surrounding rock stress dynamic real-time monitoring and playing a role in warning to ensure the safety of working face mining.
出处
《中州煤炭》
2015年第11期37-41,共5页
Zhongzhou Coal
关键词
工作面
微震
冲击地压
实时监测
working face
micro seismic
rock burst
real-time monitoring
