微震监测技术及其在井下救援中的应用分析

Micro-seismic Monitoring Technology and Its Application in Mine Rescue

针对目前救援人员与井下被困人员之间不能有效通信的问题,提出运用微震监测技术进行井下被困人员求救信号的采集与分析、定位。分析了国内外微震监测技术的研究及应用现状,主要根据分析结果推测岩体发生破坏的程度。利用该技术在对整个矿井的微震监测中能够达到10 m以内的精度;在敲击模拟试验中,能够有效监测到距离某个传感器20 m之内的围岩体、30 m之内的伸入围岩内的锚杆等金属物敲击产生的微震信号。分析认为,将微震监测技术应用到井下被困人员求救信号采集处理方面是可行的。

To counter to the problem that the rescue-crew can’ t effectively communicate with underground trapped workers, in this paper, micro-seismic monitoring technology was proposed for the acquisition, analysis and location of SOS signal sent by the trapped workers. Analysis was made on the present research and application situation of the micro-seismic monitoring technology at home and abroad, and the failure degree of rock strata was inferred according to the analyzing results. The monitoring accuracy with this technology for the whole mine is within 10 m, in the knocking simulation test, the micro-seismic signal produced by the surrounding rock mass 20 m away from a sensor and that produced by knocking the metal object in the surrounding rock within 30 m range can be effectively monitored. Analysis showed that it is feasible to apply micro-seismic monitoring technology to acquire and analyze the SOS signals from the trapped workers in the mine.