煤层突出危险微震区域探测技术研究  

Research on MS regional detection technology for coal and gas outburst hazard

作　　者：宋大钊 何学秋 窦林名[4] 祖自银[5] 王安虎 李振雷[1,2] SONG Dazhao;HE Xueqiu;DOU Linming;ZU Ziyin;WANG Anhu;LI Zhenlei(Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine,University of Science&Technology Beijing,Beijing 100083,China;School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China;Zhong-an Academy of Safety Engineering,Beijing 100013,China;Key Laboratory of Deep Coal Resource Mining,Ministry of Education,China University of Mining and Technology,Xuzhou Jiangsu,221116,China;Guizhou Panjiang Refined Coal Co.,Ltd.,Panzhou Guizhou 553537,China)

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]北京科技大学土木与资源工程学院,北京100083 [3]中安安全工程研究院,北京100013 [4]中国矿业大学深部煤炭资源开采教育部重点实验室,江苏徐州221116 [5]贵州盘江精煤股份有限公司,贵州盘州553537

出　　处：《中国安全科学学报》2021年第1期89-94,共6页China Safety Science Journal

基　　金：国家自然科学基金资助(51634001,51774023);北京市科技新星计划项目(xx2018073)。

摘　　要：为解决煤与瓦斯突出矿井缺乏区域性在线探测预警技术问题,首先,将能反映矿井动、静载荷的微震(MS)技术应用于煤与瓦斯突出矿井,研究掘进诱发微震信号的时空演化特征;然后,基于震动波计算机断层扫描技术(CT),反演研究掘进工作面区域应力场分布特征,对比分析应力异常区与事故发生位置的空间关系;最后,探讨MS技术在突出矿井的应用前景。结果表明:突出矿井松软煤层MS事件主要分布在应力集中区、掘进扰动区及构造影响区;当掘进工作面逐渐临近地质构造时,MS能量、频次会逐渐增多;基于震动波速反演得到的区域应力场结果与实际的大巷上山、停采线及掘进面等引起的应力集中相符合;金佳矿突出危险事件位置与震动波CT探测的应力异常区具有很好的对应关系,在波速梯度变化大的位置更可能发生突出。In order to address lack of regional on-line detection and early warning technology in coal and gas outburst coal mines,MS technology,which could correctly reflect dynamic and static loads,was applied in outburst-prone mines,and spatial and temporal evolution characteristics of driving-induced MS signals were studied.Then,distribution characteristics of regional stress field in heading face were calculated based on seismic wave CT before relationship between abnormal stress area and accident locations was compared and analyzed.At last,prospect of MS technology's application in outburst-prone mines was explored.The results show that MS events in soft coal seam are mainly distributed in stress concentration area,excavation disturbance area and tectonic influence area.When heading face gradually approaches geological structures,MS energy and events will tend to increase.The results of regional stress field based on seismic wave velocity inversion are consistent with stress concentration caused by main roadway uphill,stopping line and heading face.The location of outburst event in Jinjia coal mine corresponds well to abnormal stress area detected by CT technology,and outburst are more likely to occur where velocity gradient changes greatly.

关 键 词：煤与瓦斯突出 探测预警 微震(MS)监测 震动波计算机断层扫描(CT)技术 区域应力场 

分 类 号：X936[环境科学与工程—安全科学]