新集二矿底板水害微震实时监测研究

Study on real-time microseismic monitoring of water damage in Xinji No.2 Mine floor

为了加强新集二矿带压开采条件下的底板水害监测,发挥微震实时、连续、全空间监测优势,构建新集二矿深部矿井微震监测系统,对回采过程进行实时监测。总结监测结果,对微震事件总体分布、时空运移规律进行分析,研究采矿活动与突水风险之间的关系。结果表明,工作面回采期间底板150 m范围内不存在隐伏导含水构造、裂隙薄弱带。工作面回采期间构造未活化,回采过程无突水风险,保障了工作面安全回采。

In order to strengthen the monitoring of water damage in the bottom plate of Xinji No.2 Mine under the condition of band pressure mining,the microseismic real-time,continuous and full spatial monitoring advantages were brought into play,and a microseismic monitoring system was constructed in the deep mine for real-time monitoring of the retrieval process.The monitoring results were summarized,and the overall distribution and spatial and temporal transport patterns of microseismic events were analyzed to study the relationship between mining activities and sudden water risk.The results showed that there were no hidden water-conducting structures or fracture weak zones within 150 m of the bottom plate during the workings.There was no activation of the structure during the workface recovery,and there was no risk of sudden water breakout during the recovery process,which ensured the safe recovery of the workface.