多场耦合的冲击地压防治研究  

Rock burst prevention and control of multifield coupling in longwall working face

作　　者：刘伟建 侯梦杰 董森森 肖扬 邓志刚 王浩楠 张志增[1] Liu Wei-jian;Hou Meng-jie;Dong Sen-sen;Xiao Yang;Wang Hao-nan;Deng Zhi-gang;Zhang Zhi-zeng(Department of Architecture and Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China;Zhengzhou ANY Science&Technologies Inc.Zhengzhou 450000,China;Mine Safety Branch,China Coal Research Institute,Beijing 100013,China)

机构地区：[1]中原工学院建筑工程学院,郑州451100 [2]郑州安岩智能科技有限公司,郑州450000 [3]煤炭科学技术研究院有限公司,北京100013

出　　处：《Applied Geophysics》2024年第1期119-132,205,共15页应用地球物理（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.52104157)。

摘　　要：研究煤岩体中断层、采空区、陷落柱等异常地质体的活化规律,对煤矿开采过程中可能发生的冲击地压、煤与瓦斯突出、突水等地质灾害进行及时预警,对回采过程中长壁工作面斜交正断层围岩应力场和位移场演变特征进行数值模拟,同时采用高精度微地震监测系统对其活化孕灾过程进行监测,将数值模拟结果和微震监测结果进行耦合分析。结果表明:断层和采空区附近的煤岩体属于高应力区,发生微震事件频次高,能量大,工作面推采至断层处顶板的位移变化更加显著。本文采用微地震监测和数值模拟耦合分析方法,能够有效地揭示煤岩中异常地质体活化过程,对冲击地压灾害进行预警,该方法为具有相同类型地质特点的工作面安全回采提供了参考。This study numerically examines the evolution of the stress and displacement fields of rock sur-rounding an oblique normal fault in the longwall working face of a mine.The aim is to determine the law of activation of an abnormal geological body containing coal and rock mass and to provide timely warnings of geological hazards,such as coal and gas bursts,rock bursts,and flooding during coal mining.A high-precision microseismic monitoring system was used to monitor the activation of and damage to the rock surrounding the mine.The results of numerical simulations coupled with those of microseismic monitoring showed that the coal and rock mass near the fault and goaf was situated in an area of high stress,with a high frequency and energy of microseismic events,wherein changes in the displacement of the roof were more significant when the working face was pushed to the fault layer.The combined analysis provides information on the activation of rock surrounding the coal mine and can be used to provide early warnings of mining accidents.The results provide a reference for the safe mining of the working face and technical guidance for the design parameters of pressure relief holes.

关 键 词：微地震监测 数值模拟 断层 耦合分析 

分 类 号：P631.4[天文地球—地质矿产勘探] TD324[天文地球—地质学]