巷道切割型煤柱工作面回采期间应力演化规律与微震分析  

Stress evolution law and microseismic analysis during mining of roadway cutting coal pillar working face

作　　者：马泉磊 周卫国 袁立坤 鲍耀 吴柏萱 MA Quanlei;ZHOU Weiguo;YUAN Likun;BAO Yao;WU Boxuan(Pengzhuang Coal Mine,Shandong Energy Luxi Mining Co.,Ltd.,Heze 274701,China;School of Mines,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]山东能源鲁西矿业有限公司彭庄煤矿,山东菏泽274701 [2]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《煤炭科技》2024年第6期85-88,95,共5页Coal Science & Technology Magazine

基　　金：国家自然科学基金面上项目(52274098)。

摘　　要：煤柱是产生应力集中的地点,在煤柱附近最易发生冲击地压,严重威胁煤矿安全生产。彭庄煤矿4310工作面存在多种类型的煤柱,为保证安全生产,对4310工作面回采期间的应力分布进行数值模拟,分析工作面回采过程中的应力分布特征。监测工作面初采、见方期间微震事件频次、能量明显大于其他时期,与数值模拟结果相吻合,并根据应力分析与微震监测结果制定相应防治方案,为工作面冲击地压安全论证提供依据。Coal pillars are the places where stress concentration occurs,making them the most susceptible to rock burst and posing a serious threat to coal mine safety production.There are various types of coal pillars in the No.4310 working face of Pengzhuang Coal Mine.In order to ensure safety production,numerical simulation was conducted on the stress distribution during the mining process of the No.4310 working face,and the stress distribution characteristics during the mining process of the working face were analyzed.The frequency and energy of microseismic events during the initial mining and excavation period of the monitoring working face are significantly higher than those in other periods,which is consistent with the numerical simulation results.Based on stress analysis and microseismic monitoring results,corresponding prevention and control plans were formulated to provide a basis for the safety demonstration of rock burst in the working face.

关 键 词：多类型煤柱 冲击地压 应力演化 数值模拟 

分 类 号：TD324[矿业工程—矿井建设]