唐家会煤矿水害预警微震监测系统的建立及应用

Establishment and application of micro-seismic monitoring system for water disaster warning in Tangjiahui Mine

为了加强唐家会矿巨厚煤层带压开采条件下的底板水害监测,发挥微震大范围实时监测优势,构建唐家会深部矿井微震监测系统,采用敲击实验表明微震监测系统的定位误差小于6 m。构建61303工作面突水预警模型,对回采期间微震事件空间分布、时间、能量特征进行分析,研究采矿活动与微震监测之间的关系。结果表明,监测期内回采工作面微震活动主要分为活跃期和平静期,且微震事件集中在采煤作业时段,受采动影响明显,多为煤层底板浅部弱能量事件,无突水风险。

In order to strengthen the monitoring of floor water damage under the condition of mining with pressure in the thick coal seam of Tangjiahui Mine and give full play to the advantages of micro-seismic real-time monitoring in a large range,a micro-seismic monitoring system for deep coal mine of Tangjiahui Mine was constructed.The percussion experiment showed that the positioning error of micro-seismic monitoring system was less than 6 m.The water inrush early warning model of 61303 working face was constructed to analyze the spatial distribution,time and energy characteristics of micro-seismic events during mining,and to study the relationship between mining activities and micro-seismic monitoring.The results showed that the micro-seismic activities in the mining face during the monitoring period were mainly divided into active and static period,and the micro-seismic events were concentrated in the mining operation period,which were obviously affected by mining,most of them were weak energy events in the shallow part of the coal seam floor,without water inrush risk.