某矿回采巷道不同跨度数值模拟分析  

Numerical Simulation Analysis of Different Span of Mining Roadway in a Mine

作　　者：周桂杰 ZHOU Guijie(School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南理工大学土木工程学院,河南焦作454000

出　　处：《洛阳理工学院学报（自然科学版）》2022年第1期43-46,87,共5页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

摘　　要：以某煤矿工作面回采巷道为研究对象,通过试验和数值模拟研究了不同跨度巷道围岩变形规律。用数值模拟软件FLAC3D通过改变巷道跨度,研究巷道跨度对巷道变形破坏的影响。结果表明:随着巷道断面跨度的增加,巷道顶底板及两帮中点处位移不断增加,其中顶板增幅较大;应力也有一定程度的增加,巷道围岩塑性区面积增加,巷道围岩屈服破坏严重。Taking working face mining roadway in a coal mine as the research object,the deformation law of surrounding rock of roadway with different spans is studied through testing and numerical simulation.The numerical simulation software FLAC3D is used to study the influence of roadway span on roadway deformation and failure by changing its span.The results show that,with the increase of the cross-section span,the roof-floor and the midpoint of the two sides of the roadway increases continuously,and the roof increases greatly.Stress also increases to some extent.The plastic zone area of surrounding rock increases and the yield failure of surrounding rock is serious.

关 键 词：回采巷道 大跨度 数值模拟 巷道变形 

分 类 号：TD322[矿业工程—矿井建设]