缓倾斜岩层巷道破坏过程分析

Investigation on Failure Process of Tunnel in Low-angle Inclined Rock Layers

为研究深部矿井层状岩体破坏机制,进行了平面巷道的物理模型实验。本次实验以徐州旗山矿-1 000 m轨道联络大巷的地质资料为背景,通过对应不同深度的地应力加载,分析模型的受力变形特征。结果表明对缓倾斜岩层巷道,其结构的非对称性表现为破坏的非对称性,为研究处在层状岩体地质条件下的地下硐室工程的围岩稳定性和支护方案提供参考依据。

In order to understand failure mechanisms for the stratified rock masses in deep mine,physical modeling experiment on the roadway tunnel was carried out under a plane loading stresses.The field background for the experiment is main connecting tunnel located at depth of 1 000 m in Qishan coal mine,Xuzhou mining district.Through the corresponding different depth＇s crustal stress load,analysis the force deformation characteristics and destruction rule of the model.The results show that to gently inclined strata soft rock tunnel,the performance of its asymmetric structure is asymmetric destruction.Provide reference for research in the surrounding rock stability and support programs under the layered rock geological conditions underground chambers of the project.