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根据微震监测的单通道触发数对矿柱开裂进行了成功预警,现场勘查表明某矿山7线矿柱沿主应力方向出现了一条长约60m的大裂缝,证实了微震监测预警的正确性。针对矿柱开裂情况,对井下采矿生产进行了有效的调整,并加快矿柱两边空区的充填作业,缓解了矿柱的承压现状,定量分析表明随着充填高度的增加,矿柱的安全系数逐渐增大,对于指导矿山安全生产取得了良好效果。
According to the single-channel triggering number of microseismic monitoring, the cracking of the pillars was successfully warned. The field survey showed that a large crack of 60 m in length along the main stress direction occurred in the 7-pillared pillars of a mine, confirming the correctness of microseismic monitoring and early warning. In view of the cracking of ore pillars, the mine production is effectively adjusted and the filling work on both sides of the pillars is accelerated, which alleviates the pressure bearing status of the pillars. Quantitative analysis shows that as the filling height increases, the safety of the pillars Coefficient gradually increased, for the guidance of mine safety has achieved good results.