摘要
为解决坚硬顶板对巷道围岩变形影响大的问题,本文以腾晖矿2202工作面为工程背景,采用数值模拟软件对切顶卸压充填体的应力应变进行研究。对比切顶前后充填体应力值,验证了切顶卸压的可行性,对不同切顶角度、不同切顶卸压高度下围岩的应力应变情况进行分析,得出最佳切顶角度为30°,最佳切顶卸压高度为10 m。该研究为矿井切顶卸压提供一定的参考。
In order to solve the problem of the great influence on surrounding rock deformation by the hard roof,and taking No.2202 Face of Tenghui Mine as the engineering background,the stress and strain of roof cutting and pressure relief filling body were studied using the numerical simulation software.The feasibility of roof cutting and pressure relief was verified by comparing the stress values of filling body before and after roof cutting.The stress and strain of surrounding rock under different roof cutting angles and different roof cutting and pressure relief heights were analyzed,and the optimum cutting angle was 30°,the optimum height of top cutting was 10m.It provided a certain reference for roof cutting and pressure relief.
作者
杨鹏
Yang Peng(Tenghui Coal Industry Co.,Ltd,Huozhou Coal Electricity Group,Linfen 041000,China)
出处
《煤炭与化工》
CAS
2022年第1期22-24,28,共4页
Coal and Chemical Industry
关键词
切顶卸压
数值模拟
切顶高度
切顶角度
roof cutting and pressure relief
numerical simulation
cutting height
cutting angle
