近直立煤层群动载诱冲作用规律研究  

Study on Dynamic Load Induced Scourging Law of Near Vertical Coal Seam Group

作　　者：朱红伟 宋炳霖 ZHU Hongwei;SONG Binglin(CHN Xinjiang Energy Co.,Ltd.,Urumqi 830000,China)

机构地区：[1]国家能源集团新疆能源有限责任公司,乌鲁木齐830000

出　　处：《煤炭技术》2025年第4期201-209,共9页Coal Technology

摘　　要：研究了煤岩破裂震动位移场特征,推导了同步压缩变换函数并进行了震动波形的拆分和重构。基于FLAC^(3D)数值模拟软件,以乌东煤矿地质条件和真实冲击地压事件为例,对震动波作用下,近直立煤层煤岩体动力学响应特征和动载诱冲作用规律,展开了动态数值模拟研究,研究结果表明:介质类型影响震动波传播,同一地层震动波呈现各向同性衰减;巷道围岩受震动波作用发生应力升高,并最终发生卸压破坏;动载作用下巷道破坏呈明显的由北向南的方向性,靠近微震事件易发区域的巷道侧受动载扰动强烈,巷道破坏呈非对称特征。研究结果揭示了近直立煤层群中,煤体支撑区域附近覆岩结构破裂产生的震动波诱发冲击地压的内在机制。Studies the characteristics of coal rock fracture vibration displacement field,deduces the synchronous compression transformation function,and carries on the splitting and reconstruction of the vibration waveform.Based on the FLAC^(3D) numerical simulation software,taking the geological conditions and real rock burst events of Wudong coal mine as an example,the dynamic numerical simulation research was carried out on the dynamic response characteristics of coal and rock mass in near vertical coal seam under the action of vibration waves and the law of dynamic load induced shock action.The research results show that:the type of medium affects the vibration wave propagation,and the same stratum presents isotropic attenuation.The surrounding rock of roadway is subjected to the action of vibration wave and the stress increases and finally the pressure relief breaks.Under dynamic load,the roadway failure presents an obvious direction from north to south.Near the area prone to microseismic events,the roadway side suffers strong dynamic load disturbance,and the roadway failure presents an asymmetric feature.The research results reveal the internal mechanism of rock burst induced by vibration wave caused by overburden structure fracture near the coal body support area of vertical coal seam group.

关 键 词：近直立煤层 数值模拟 震动波加载 冲击地压 

分 类 号：TD32[矿业工程—矿井建设]