摘要
为解决深部煤矿开采巷道发生冲击地压的问题,采用理论分析和数值模拟方法研究钻孔卸压中钻孔周围的应力分布特征以及影响卸压效果的因素;分析巷道钻孔卸压机理,利用FLAC3D数值模拟软件结合控制变量法分别研究钻孔直径、钻孔间距、钻孔深度、钻孔布置形式对卸压效果的影响,根据钻孔及巷道周围垂直应力分布特征选取最优的钻孔布置参数及形式,为现场工程实践钻孔的选取提供理论依据。
In order to solve the problem of rock burst in deep coal mining roadway,the stress distribution characteristics around borehole and the factors affecting the pressure relief effect were studied by theoretical analysis and numerical simulation.Roadway borehole pressure relief mechanism analysis,using the software FLAC3Dnumerical simulation combined with control variable method,respectively,the drilling depth of drilling borehole diameter borehole spacing decorate a form to the effects of the pressure relief according to the characters of drilling and the vertical stress distribution of roadway surrounding the selection of the optimum well location parameter and form,as to provide theoretical basis for the selection of field drilling engineering practice.
作者
陈涛
阮学云
王襄禹
朱治刚
CHEN Tao;RUAN Xueyun;WANG Xiangyu;ZHU Zhigang(School of Mechanical Engineering,Anhui University of Science and Technology,Huainan 232000,China;School of Mining Engineering,China University of Mining and Technology,Xuzhou 221116,China;School of Mining Engineering,Anhui University of Science and Technology,Huainan 232000,China)
出处
《煤炭技术》
CAS
北大核心
2023年第1期119-123,共5页
Coal Technology
基金
国家重点研发计划资助项目(2020YFB1314204)。
关键词
冲击地压
钻孔卸压
参数优化
数值模拟
rock burst
drilling pressure relief
parameter optimization
numerical simulation
