煤矿老采空区覆岩移动变形监测方法分析及应用  

Analysis and application of monitoring method of overburden movement and deformation in old goaf of coal mine

作　　者：李学良[1,2] LI Xueliang(China Coal Research Institute,Beijing 100013,China;China Coal Science and Technology Ecological Environment Technology Co.,Ltd.,Beijing 100013,China)

机构地区：[1]煤炭科学研究总院,北京100013 [2]中煤科工生态环境科技有限公司,北京100013

出　　处：《矿业安全与环保》2022年第4期157-162,共6页Mining Safety & Environmental Protection

基　　金：北京市科技计划课题(Z181100005118012);中煤科工创新创业资金专项重点项目(2018-2-ZD007)。

摘　　要：为准确掌握煤矿老采空区覆岩残余移动变形特征及规律,在分析不同条件下各类采空区覆岩结构特征的前提下,总结归纳了覆岩移动变形的监测对象及要点,并对目前存在的监测方法及适用性进行了简要分析,最后以条带老采空区为监测对象,采用光纤—微震相结合的方法,从方案设计、数据采集、结果分析等角度对采空区覆岩移动变形进行系统研究。研究结果表明:条带老采空区覆岩移动变形处于毫米级,监测期范围内覆岩无明显移动破坏现象,覆岩结构相对稳定,光纤—微震相结合的方法可有效地对采空区覆岩移动变形进行实时监测,满足预期监测目的。In order to accurately grasp the characteristics and laws of residual movement and deformation of overburden in old goaf of coal mine, on the premise of analyzing the structural characteristics of overburden in various types of goaf under different conditions, the monitoring objects and key points of overburden movement and deformation were summarized and analyzed, and the existing monitoring methods and applicability were briefly analyzed. Finally, the strip old goaf was taken as the monitoring object, the method of combining optical fiber and microseismic was used to systematically study the movement and deformation of overburden in goaf from the aspects of scheme design, data acquisition and result analysis. The research results show that the movement and deformation of overburden in the strip old goaf are at millimeter level, there is no obvious movement and damage of overburden within the monitoring period, and the overburden structure is relatively stable. The method of combining optical fiber and microseismic can effectively monitor the movement and deformation of the overburden in goaf in real time, which meets the expected monitoring purpose.

关 键 词：采空区覆岩 移动变形 监测方法 光纤 微震 条带开采 

分 类 号：TD173[矿业工程—矿山地质测量]