摘要
为解决围岩强度低、支护结构不合理、受采动应力影响导致浅埋煤层回采巷道围岩变形严重的问题,以华盖山煤矿104工作面回风巷为工程背景,提出了U型钢可缩性支架支护方案。采用数值模拟方法研究了U型钢可缩性支架支护巷道围岩应力分布和塑性区特征,结果显示浅部围岩为剪切-拉伸破坏。
In order to solve the problem of serious deformation of roadway surrounding rock in shallow coal seam caused by low intensity of surrounding rock, unreasonable support structure and mining stress influence, U-steel yieldable support is put forward in the engineering background of 104 face tailgate in Huagaishan coal mine, and the characteristics of stress distribution and plastic zone are analyzed by way of numerical simulation. The result indicates shallow surrounding rock is shear and tensile.
作者
朱影
ZHU Ying(Kunming Institute of Coal Science, Kunming 650200, Chin)
出处
《煤炭技术》
北大核心
2017年第5期93-96,共4页
Coal Technology
基金
云南省科学技术厅矿压与支护研究室建设计划项目(2012CF031)
关键词
围岩控制
回采巷道
数值模拟
浅埋煤层
surrounding rock control
roadway
numerical simulation
shallow coal seam damaged by
