不同水平应力对U钢支架支护巷道稳定性影响的研究  

Research on the influence of roadway stability with U-steel support stents under different horizontal stress

作　　者：张盛[1] 张易飞[1] 王云龙 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454001 [2]山西焦煤霍州煤电汾河公司回坡底矿,山西临汾041600

出　　处：《中国矿业》2012年第8期79-81,85,共4页China Mining Magazine

基　　金：河南省教育厅自然科学基础研究计划项目资助(编号:2010A440005);煤炭工业协会指导性计划项目资助(编号:MRKJ2010-354)

摘　　要：水平应力是影响巷道围岩稳定性的重要因素之一。以鹤壁二矿347工作面顺槽的实际围岩条件为基础,运用Flac3D软件模拟分析了巷道在U36钢支护的情况下,不同侧压力系数对巷道围岩的塑性区分布及位移的影响。结果表明,随着水平应力的增加,巷道两帮的变形较小,巷道的肩部变形较为严重,底臌量增加的特别明显,U36钢金属支架支护对巷道两帮的控制效果较好,而肩部和底板是薄弱环节需要加固。Horizontal stress is one of the important factors affecting the roadway stability. Based on the actual conditions of surrounding rock in the working face 347 in Hebi mine No. 2, the influence of the plastic areas and the displacement distributions around the roadway were analyzed under different horizontal stress by flac3D,which were supported with U36 steel stents. The results showed that the deformation of the roadway＇s sides was smaller,and the deformation of the roadway＇s shoulder was serious,and the floor heave was more serious with the lateral pressure coefficient increasing. So the control effect for the roadway＇s sides was better with the U36-steel support stents, but the shoulder and the floor were the weak parts, which need to be strengthened.

关 键 词：侧压力系数 位移 塑性区 FLAC3D 

分 类 号：TD823[矿业工程—煤矿开采]