掘进煤巷采空区Rayleigh型槽波超前探测三维数值模拟研究  

Three-dimensional numerical simulation of the Rayleigh channel wave advance detection in the goaf of coal roadway

作　　者：呼邦兵 朱国维[1,2] 刘金锁 钟俊峰 龙波 HU Bang-bing;ZHU Guo-wei;LIU Jin-suo;ZHONG Jun-feng;LONG Bo(College of Geoscience and Surveying Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology(Beijing),Beijing 100083,China;School of Resources and Geoscience,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083 [2]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083 [3]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤炭工程》2020年第2期121-125,共5页Coal Engineering

基　　金：国家重点研发计划资助项目(2018YFC0807806);国家重点研发计划资助项目(2018YFC0807801)。

摘　　要：不明采空区的存在诱发了多种矿山地质灾害,给煤矿安全生产和生命财产安全带来重大隐患。为了研究煤巷迎头前方存在采空区的条件下槽波地震波场的传播规律,建立了"岩-煤-岩"三层含采空区地质模型并进行了地震超前探测波场数值模拟,分别对三维地震波场快照和三分量合成地震记录进行分析研究。研究结果表明:在对巷道前方采空区进行地震超前探测时,Rayleigh型槽波可以作为识别巷道迎头前方采空区的有效波;反射Rayleigh型槽波在X、Z分量上信号特征明显、干扰小、能量强、易于识别;Y分量信号可以接收到直达Love型槽波。最终,提出利用Rayleigh型槽波对采空区进行超前探测。The existence of unidentified goaf has induced a variety of mine geological disasters,which poses a major hidden danger to the safety of coal mine production,personnel life and property.In order to study the propagation law of channel seismic wave field under the condition that there is a goaf in front of the coal roadway,a three-layer geological model containing the goaf in the"rock-coal-rock"is established to simulate the wave field of the seismic advance detection,threedimensional seismic wave field snapshots and three-component synthetic seismic records were analyzed.The results show that:when the goaf in front of the roadway is detected by seismic advance detection,reflected Rayleigh channel waves can be used as an effective wave to identify the goaf in front of the roadway head;the Rayleigh channel wave has obvious signal characteristics,small interference,strong energy and easy identification on the X and Z components;Y component signal can receive direct Love channel waves.Finally,it is proposed to use the Rayleigh-type groove wave to carry out advanced detection of the goaf.

关 键 词：采空区 超前探测 Rayleigh型槽波 数值模拟 

分 类 号：P631[天文地球—地质矿产勘探]