IMS微震技术在采场监测中的应用

Application of IMS microseismic technology in stope monitoring

针对矿山采场回采时岩体稳定性受爆破震动影响较大的问题,尝试利用IMS微震监测技术探究岩体内部损伤程度。以某矿为例,对站网优化、定位精度和爆破测速等进行了分析,从而建立了传感器"日"字形布置的IMS采场微震监测系统。结果表明微震重点监测区域的定位误差精度在10m范围内;爆破震动诱发了1040分层大量的微震事件,有向四周继续延伸的趋势,是需要密切关注和加强支护的范围。

To address the problem that rock mass is heavily im- pacted by blasting vibration in mining operation, the IMS micro- seismic monitoring technology was used to study the internal damage of rock mass. The network optimization, location preci- sion and blasting velocity in rock mass were analyzed by using this technology in a mine to build the IMS mieroseismie monito- ring system with sensor configuration like Chinese word ＂ 日 ＂ . Results show that the location accuracy of intensive microseismic monitoring area is within 10 meters and the 1040 m level is great- ly affected by blasting vibration with a large number of microseis- mic events and there is a tendency to extend all around. The range needs to pay close attention with support reinforcement.