深部高应力巷道深-浅刚柔耦合锚注支护技术研究

Research on Deep-Shallow Rigid-Flexible Coupling Bolt-grouting Support Technology for Deep High-stress Roadway

针对深部高应力巷道围岩大变形与支护结构失效严重等问题,以皇后煤矿15108回风巷为背景,综合运用理论分析、数值模拟与现场工业性试验等方法。在对巷道围岩破坏机制进行深入分析基础上,提出了高应力巷道深-浅刚柔耦合锚注支护技术。对原始支护方案与深-浅刚柔耦合锚注支护方案进行对比分析。工程实践表明:深-浅刚柔耦合锚注支护方案较原始支护方案在围岩塑性区以及应力分布方面都有较为明显改善,巷道围岩变形量得到有效控制,实现了深部高应力巷道围岩稳定性控制。

Aiming at the problems of large deformation of surrounding rock and serious failure of supporting structure in deep high-stress roadway,based on the 15108 return airway of the Huanghou coal mine, the comprehensive use of theoretical analysis, numerical simulation, and field industrial testing methods are used.Based on the in-depth analysis of the failure mechanism of the surrounding rock of the roadway, the deep-shallow rigid-flexible coupling bolt-grouting support technology for high-stress roadways is proposed.The original support scheme and the deep-shallow rigid-flexible coupling bolt-grouting support scheme are compared and analyzed, engineering practice shows that the deep-shallow rigid-flexible coupling bolt-grouting support scheme has obvious improvement in the plastic zone and stress distribution of the surrounding rock compared with the original support scheme,and the deformation of the surrounding rock of the roadway is effectively controlled,the stability control of the surrounding rock of the deep high-stress roadway is realized.