采用微震监测技术提高钻孔卸压效果的方法

The method to improve the pressure relief effect of drilling by using micro-seismic monitoring technology

为了研究工作面前方卸压钻孔的精确施工范围,提高矿山动力灾害防治措施的经济性,以方山矿首采工作面为工程背景,基于微震监测技术,通过分析微震事件空间分布特征,推演工作面前方支承压力分布规律。以此为依据,设计合理的卸压钻孔施工参数。研究表明,以微震监测技术为手段,推演超前支承压力范围,指导大直径钻孔卸压措施的方法具有很强的工程应用价值,既能保证动力灾害防治的有效性,又能提高其经济性。

Fangshan coal mine is taken as the engineering background to study the accurate scope of the pressure relief drilling in front of the working face and make the coal mine dynamic disaster prevention and control measures be more economical.By analyzing the space distribution of micro-seismic event based on the high-precision micro-seismic monitoring technology,the distribution law of abutment pressure in front of the working face has been studied.Pressure relief drilling parameters are redesigned according to the above result.The results show that the micro-seismic monitoring technology can be used to obtain the scope of advanced abutment pressure,and then guiding the implementation of large diameter pressure relief drilling,the method has strong engineering application value,and can improve the economical efficiency of dynamic disaster prevention.