深部条带老采空区覆岩破坏多参量监测研究  

Study on multi-parameter monitoring of overburden failure in deep strip old goaf

作　　者：李学良[1,2] 李宏艳 白国良[1] 李大猛[3,4] 余洋 LI Xueliang;LI Hongyan;BAI Guoliang;LI Dameng;YU Yang(China Coal Research Institute,Beijing 100013,China;Beijing Tianma Intelligent Control Technology Co.,Ltd.,Beijing 101399,China;Sichuan Geological Environment Survey and Research Center,Chengdu 610081,China;Sichuan Province Engineering Technology Research Center of Geohazard Prevention,Chengdu 610081,China;China Institute of Geo-Environmental Monitoring,Beijing 100081,China;Key Laboratory of Mine Ecological Effects and Systematic Restoration,Ministry of Natural Resources,Beijing 100081,China)

机构地区：[1]煤炭科学研究总院,北京100013 [2]北京天玛智控科技股份有限公司,北京101399 [3]四川省地质环境调查研究中心,四川成都610081 [4]四川省地质灾害防治工程技术研究中心,四川成都610081 [5]中国地质环境监测院,北京100081 [6]自然资源部矿山生态效应与系统修复重点实验室,北京100081

出　　处：《矿业安全与环保》2024年第4期156-161,167,共7页Mining Safety & Environmental Protection

基　　金：北京市科技计划课题(Z181100005118012);天玛智控自立项目(2024-TM-014-J1)。

摘　　要：针对深部条带老采空区覆岩移动变形问题,确定了裂隙发育、拉压应变、岩层物性等主要参量指标,采用钻孔电视法、分布式光纤感测法、井间电法CT、微震法构建了采空区覆岩“点-线-面-体”多参量监测模式;运用该监测模式对工程实例进行实测分析,获取了采空区覆岩全方位、多层次的移动破坏特征,得出覆岩裂隙多集中在465 m以下,少量空洞位于垮落带及煤柱上方靠近采空区侧,煤柱塑性区范围约8 m的结论,综合判定采空区覆岩结构可在长时间内保持相对稳定。结果表明:“点-线-面-体”多参量监测模式在内容上能够有效涵盖条带采空区覆岩移动变形的各参量指标,时空上可实现点(静态)、线(动态)、面(静态)、体(动态)相互结合的全过程监测,监测结果间能相互验证,可满足深部条带采空区覆岩移动变形监测要求。In view of the movement and deformation of overlying rocks in deep strip old goaf,the main parameters such as fracture development,tensile and compressive strain and rock physical property have been determined.A“point-line-surface-body”multi-parameter monitoring mode for overlying rocks in goaf areas has been constructed using borehole television method,distributed fiber optic sensing method,cross well electrical CT method,and microseismic method.The monitoring model was used to analyze the engineering example,and the comprehensive and multi-level movement and failure characteristics of the overlying rock in the goaf were obtained.It is concluded that the overlying rock fractures are mostly concentrated below 465 m,and a few cavities are located above the collapse zone and coal pillar near the goaf side,and the plastic zone of the coal pillar is about 8 m.Therefore,it is determined that the overlying rock structure in the goaf remains relatively stable for a long time.The results indicate that the“point-line-surface-body”multi-parameter monitoring mode can effectively cover various parameter indicators of the movement and deformation of the overlying rock in the strip goaf in terms of content,and can achieve the full process monitoring of the combination of point(static),line(dynamic),surface(static),and body(dynamic)in time and space.The monitoring results can be mutually verified,and can meet the requirements of monitoring the movement and deformation of the overlying rock in the deep strip goaf.

关 键 词：条带采空区 覆岩破坏 全空间 多参量 监测模式 

分 类 号：TD325.4[矿业工程—矿井建设]