高应力弱胶结软岩巷道变形机理及控制技术

Research on Deformation Mechanism and Control Technology of Weakly Consolidated Soft Rock Roadway under High Stress

针对某矿运输巷变形大、围岩松动范围广、持续变形剧烈、支护构件锈蚀破坏严重的工程难题,分析了巷道变形破坏特征及其影响因素,基于"耦合-让压"支护理论,提出了"锚网索+喷层+让压层+U型钢"联合支护方案,并采用FLAC3D软件对比分析了原支护与优化后支护方案的支护效果。

According to the engineering problem of complete deformation, the wide range of surrounding rock loosening,the large failure of severe corrosion of supporting member,and the intense persistent deformation of transporting roadway of a mine,it is analyzed that the deformation characteristics of roadway and its influencing factors,based on the coupling release-pressure support theory,were ＂anchor cable ＋ spray -layer ＋pressure -release -layer ＋U -shaped steel＂ support technology,were comparative analysis the support effect of the original support scheme and the optimized support scheme by FLAC3D software.