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通过采用UDEC3.1离散元软件分析了蹬空及沿空巷道的围岩应力场、塑性区和位移场的变化规律,提出了相应的锚索网支护设计参数及优化。通过分析沿空侧煤柱的变形特征,采用喷注浆加固工艺强化巷道围岩的力学性能,有效地控制了沿空侧煤柱的变形。
By using UDEC3.1 discrete element software, the changing law of stress field, plastic zone and displacement field of surrounding rock in emptying roadway and gob-side entryway is analyzed, and the corresponding design parameters and optimization of anchor cable network support are proposed. By analyzing the deformation characteristics of the pillars along the side of the gob and using the grouting reinforcement technology to strengthen the mechanical properties of the surrounding rock, the deformation of the pillars in the gob-side is effectively controlled.