工作面走向对断层活化及应力分布的影响  

Influence of Working Face Strike on Fault Activation and Stress Distribution

作　　者：董鹏 赵健 DONG Peng;ZHAO Jian(Guizhou Electric Power Design and Research Institute Co.,Ltd.,China Electric Construction Group,Guiyang 550023,China)

机构地区：[1]中国电建集团贵州电力设计研究院有限公司,贵州贵阳550023

出　　处：《煤矿安全》2018年第11期229-232,共4页Safety in Coal Mines

基　　金：国家安全生产监督管理总局安全生产预防及应急专项资金资助项目

摘　　要：为了研究工作面走向对断层活化及支承压力分布的影响,采用3DEC软件对面向断层开采及背向断层开采进行模拟。试验结果表明:面向断层开采距离断层50 m时断层活化,距离断层25 m时活化速率迅速增加,由于断层的影响,支承压力最大值为27 MPa,应力集中系数达2.2;背向断层开采距离断层75 m时断层活化,由于工作面逐渐远离断层,受断层活化影响较小,支承压力最大值为17.2 MPa。通过对比分析可知,背向断层开采的效果优于面向断层开采。In order to study the influence of working face strike on fault activation and abutment pressure distribution, 3 DEC software is applied to simulate fault-oriented mining and back-oriented fault mining. The test results show that： during the faultoriented mining, the fault activation occurs at a distance of 50 m from the fault, activation rate increased rapidly when it is 25 m away from fault, due to the influence of fault, the maximum abutment pressure is 27 MPa and the stress concentration coefficient is up to 2.2; during the back-oriented fault mining, the fault is active when the mining distance is 75 m from the fault, as the working face is gradually away from the fault, it is less affected by the fault activation, and the maximum supporting pressure is17.2 MPa. By contrast analysis, the effect of back-oriented fault mining is better than that of fault-oriented mining.

关 键 词：工作面走向 断层活化 支承压力 数值试验 应力分布 

分 类 号：TD323[矿业工程—矿井建设]