煤柱集中载荷对不同错距巷道围岩应力的影响  

Concentrate loading of pillar and its effect on the tunnel surrounding rock stress of differ location

作　　者：王旭宏[1,2] 张绪言[2] 张百胜[2] 康立勋[2] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024 [2]太原理工大学阳泉学院,山西阳泉045000

出　　处：《煤炭工程》2009年第8期84-86,共3页Coal Engineering

摘　　要：研究煤柱下方不同错距巷道的应力状态,对煤柱下部邻近煤(岩)层巷道合理布置方式,以及巷道选取合理的支护方式具有指导意义。论文采用数值模拟方法分析了煤柱集中载荷下不同位置巷道围岩的应力分布特征。通过分析可知:当巷道位于煤柱中心正下方时,巷道顶底板及两帮受到对称作用力,支护亦应采用对称方式;当巷道位于煤柱边缘下方或巷道距离煤柱一定距离时,巷道顶底板及两帮受力不对称,靠近煤柱侧受力最大,最容易发生破坏,因此靠近煤柱侧需加强支护,应采用非对称支护。Study on the stress state of the differ location tunnel under the pillar, it is meaning to select appropriate layout of tunnel and suitable support way. The paper analysis the characteristic of the tunnel surrounding rock stress of differ location by numerical analysis. When the tunnel under the pillar, symmetric stress acting on the surrounding rock, so the support way is symmetrical, when the tunnel under the edge of the pillar or a distance between the pillar, asymmetric stress acting on the surrounding rock, the stress on the surrounding rock near the pillar is maximal, it is easy to destroy, so the support way is asymmetrical.

关 键 词：集中载荷 应力分布规律 非对称支护 

分 类 号：TD322[矿业工程—矿井建设]