基于微震监测的工作面过背斜段底板破坏特征研究  

Study on floor failure characteristics of working face passing anticlinal section based on micro-seismic monitoring

作　　者：李小二 杨波 张亮亮 海笑云 卢钢 苗葳[5] 周金艳 韩磊 LI Xiaoer;YANG Bo;ZHANG Liangliang;HAI Xiaoyun;LU Gang;MIAO Wei;ZHOU Jinyan;HAN Lei(Zhaogu No.1 Mine,Henan Energy Coking Coal Company,Jiaozuo 454000,China;Hebei Coal Science Research Institute Co.,Ltd.,Xingtai 054000,China;Key Laboratory of Mine Water Hazard Detection,Prevention and Control,State Mining Safety Supervision Bureau,Xingtai 054000,China;Hebei Key Laboratory of Mining Microseismicity,Xingtai 054000,China;School of Energy and Mining Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]河南能源焦煤公司赵固一矿,河南焦作454000 [2]河北煤炭科学研究院有限公司,河北邢台054000 [3]矿井水害探测与防控国家矿山安全监察局重点实验室,河北邢台054000 [4]河北省矿井微震重点实验室,河北邢台054000 [5]中国矿业大学(北京)能源与矿业学院,北京100083

出　　处：《煤矿安全》2025年第2期137-145,共9页Safety in Coal Mines

基　　金：国家自然科学基金重点资助项目(51934008)。

摘　　要：为探究回采工作面过背斜段的底板破坏特征,以赵固一矿16091工作面为例,依据工作面实际地质条件和现场微震监测数据划分了过背斜段与正常开采段,对比分析了工作面过背斜段与正常开采段底板微震事件分布特征,揭示了微震角度下工作面过背斜段底板破坏特征;通过相似模拟试验揭示了工作面在背斜构造下采煤底板破坏规律。研究表明:在工作面过背斜段回采时,B1背斜轴部为高能量核密度区;工作面过背斜前期段、后期段的底板破坏深度分别为正常开采段的1.12、1.08倍,底板破坏边界均触及L8灰岩内部;在深部承压水体上采煤过程中,过背斜段构造应力对底板失稳破坏具有显著影响作用。In order to explore the floor failure characteristics of the passing anticline section of the working face,taking the 16091 working face of Zhaogu No.1 mine as an example,the passing anticline section and the normal mining section are divided according to the actual geological conditions of the working face and the field microseismic monitoring data,and the distribution characteristics of microseismic events of the passing anticline section and the normal mining section are compared and analyzed.The failure characteristics of the floor of the working face passing anticline section under the microseismic angle are revealed.Then the failure law of coal mining floor under anticlinal structure is revealed by similar simulation test.The results show that the anticlinal axis of B1 is a region of high energy core density when the working face passes through the anticlinal section;the failure depth of the floor in the early and late anticlinal sections of the working face is 1.12 and 1.08 times that of the normal mining section,respectively,and the failure boundary of the floor touches the interior of L8 limestone.In the process of coal mining on deep confined water body,the tectonic stress in the passing anticlinal section has a significant effect on the instability failure of floor.

关 键 词：背斜构造 微震监测 底板破坏 承压水 矿井水害 突水 

分 类 号：TD325[矿业工程—矿井建设]