基于微震监测的煤层覆岩关键层判别

Discriminant on key stratum in coal overburden based on microseismic monitoring

关键层在顶板裂隙演化以及瓦斯异常集聚等矿井开采中起着关键性作用,因此覆岩关键层准确位置的快速判别对矿井开采具有现实意义。根据钱鸣高院士提出的关键层理论,通过关键层计算判别法与现场高精度微震监测技术相结合的方法,来快速、准确地判断关键层的层位。研究结果表明:计算法判别的结果和微震技术确定的结果基本一致。

Key stratum plays a key role in the evolution of roof crevice and the abnormal accumulation of gas.Therefore,it is of practical significance to quickly identify the exact location of overlying strata key stratum.According to the key stratum theory put forward by Academician Qian Minggao,this paper used the method of key stratum calculation discrimination and high-precision microseismic monitoring technology in the field to quickly and accurately determine the horizon of the key stratum.The research results show that the results of calculation discrimination are basically consistent with those of microseismic technology.