微震-应力联合监测的工作面采动影响规律  

Mining Influence Law of Working Face Based on Microseismic Stress Joint Monitoring

作　　者：韩亮[1] 何晓义 梁开山 辛崇伟[3] 孙伟 程刚 HAN Liang;HE Xiaoyi;LIANG Kaishan;XIN Chongwei;SUN Wei;CHENG Gang(Safety Engineering College,North China Institute of Science and Technology,Beijing 101601,China;Tengdong Coal Mine,Shandong Zaozhuang Mining Group,Zaozhuang 277522,China;School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]华北科技学院安全工程学院,北京101601 [2]山东枣庄矿业集团滕东煤矿,山东枣庄277522 [3]北京科技大学土木与资源工程学院,北京100083

出　　处：《湖南科技大学学报（自然科学版）》2022年第2期13-17,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：2022年度河北省高等学校科学技术研究项目资助(ZC2022047);2021年度教育科学研究课题资助(HKJYZD202106);中央高校基本科研业务费资助项目(3142017092);河北省自然科学基金资助项目(E2019508088)。

摘　　要：基于微震-应力联合监测手段,分析工作面回采期间的采动影响规律.结果表明:工作面初采阶段,采动应力的影响范围为70~73 m,覆岩破裂高度集中在40 m以内;见方期间,采动应力的影响范围为140~150 m,覆岩破裂高度集中在80 m以内.相对于初采阶段,见方期间应力集中程度进一步增加.将得到的采动影响规律应用于现场实际,确定了超前支护距离和停采线位置,并对煤体的冲击危险性评价起到了积极作用.Based on the joint monitoring method of microseism and stress,the influence law of mining during mining was obtained.The results show that in the initial mining stage,the influence range of mining stress is 70~73 m,and the fracture height of overburden is concentrated within 40 m;in the period of square cutting,the influence range of mining stress is 140~150 m,and the fracture height of overburden is concentrated within 80 m.Compared with the initial mining stage,the stress concentration degree is further increased during the period of square.The influence law of mining is applied to the field practice,and the advance support distance and stopping line position are determined,which plays a positive role in the impact risk assessment of coal body.

关 键 词：微震 应力 采动应力 覆岩破裂高度 应力集中系数 

分 类 号：TD323[矿业工程—矿井建设]