凡口铅锌矿微震监测技术的应用与研究  

Application and research of microseismic monitoring technology in Fankou Lead-zinc Mine

作　　者：吴小丰 吴贤振[1] 朱仕林 

机构地区：[1]江西理工大学资源与环境工程学院

出　　处：《化工矿物与加工》2019年第12期5-8,共4页Industrial Minerals & Processing

摘　　要：凡口铅锌矿建立了一套44通道的微震监测系统,实现全天候24h对矿区的在线监测。通过研究微震事件的时空分布特征,分析该矿区微震事件的活动分布规律。结果表明,微震事件与井下作业活动紧密相关,根据累计视体积的快速增加、能量指数以及施密特数的快速下降和位移云图得知岩体有失稳劣损的迹象,从而预警出-650m中段的N4采场岩体将会失稳,进而作出对该区域失稳或者垮塌的风险预警,为采矿活动的安全提供保障。A set of 44-channel microseismic system was established in Fankou Lead-zinc Mine to realize 24 hall-weather online monitoring of the mine area.By studying the spatial and temporal distribution characteristics of microseismic events,the active distribution rules of microseismic events in this mining area were obtained and the results showed that microseismic events are closely related to underground operation.According to the cumulative rapid increase of apparent volume,the rapid decrease of energy index and Schmidt number and the displacement cloud picture,the signs of instability and deterioration of rock mass are obtained,so as to warn that rock mass in N4 stope at the level-650 m will become unstable,and then make the risk early warning of instability or collapse in this area to provide a guarantee for the safety of mining activities.

关 键 词：微震监测 事件分布 风险预警 深部开采 能量指数 施密特数 视体积 凡口铅锌矿 

分 类 号：TD326[矿业工程—矿井建设]