采空区下掘进巷道围岩控制技术研究

Study on the Control Technique of Surrounding Rock in Roadway Excavation under Goaf Area

针对峙峰山煤矿辅助运输大巷在掘进过程中遇到上方小窑遗留采空区时围岩破坏严重、巷道稳定性差的问题,采用理论分析与数值模拟的方法对巷道掘进支护方案进行了优化设计,并应用于现场。通过对掘进过程中巷道围岩变形量进行监测,表明该支护方案能够提高巷道稳定性、改善围岩力学环境,具有一定的合理性。

Aiming at the serious damage of surrounding rock and the poor stability of roadway during the excavation process of the main roadway of the auxiliary transportation of Jifeng Mountain Coal Mine,the method of theoretical analysis and numerical simulation is used to optimize the roadway excavation support scheme and apply it to the scene. By monitoring the deformation of roadway surrounding rock during excavation,it is shown that the support scheme can improve the stability of roadway and the mechanical environment of roadway.