摘要
以红阳三矿1204-2工作面为背景,基于微震数据将1204-2工作面微震分布规律分为三个阶段,确定各阶段的冲击危险性及原因。结果表明:2018年1–6月为第一个阶段,震动事件多为小规模震动;2018年7月为第二阶段,单次微震强度增强,最大能量达140000J;2018年8月后为第三阶段,出现了9次106J以上震动,主要是由于在10月份以后开采煤层穿过保护层区域,进入原生顶板区域所致。
Taking the 1204-2 working face of Hongyang No.3 Mine as the background,the microseismic distribution rule of the 1204-2 working face is divided into three stages based on the microseismic data to determine the impact hazard and cause of each stage.The results show that:January to June 2018 is the first phase,and the vibration events are mostly small-scale vibrations;July 2018 is the second phase,the single microseismic intensity is enhanced,and the maximum energy reaches 140,000J;after August 2018,it is In the third stage,there were 9 shocks above 106J,mainly due to the mining of coal seam after October,passing through the protective zone mining area and entering the original roof area.
作者
张乐有
包鑫阳
Zhang Le-you;Bao Xin-yang
出处
《化工设计通讯》
CAS
2020年第5期155-156,共2页
Chemical Engineering Design Communications
关键词
工作面
冲击地压
微震分布
working face
rock burst
microseismic distribution
