深埋高地应力大断面破碎围岩马头门稳定性研究

摘要

针对国内某大型矿井埋深高、地应力高、断面大等特点,利用理论分析和数值计算相结合的方法分析该矿副井马头门围岩的稳定性状况,通过研究确定出了马头门附近围岩破坏区域和卸压带分布,并据此确定出了马头门附近围岩加强支护范围（即不稳定区域）,建议在危险区域采用＂锚＋梁＋网＋钢带＂等联合支护,并在施工时采用即使支护。%In this paper a domestic large mine buried depth,high,high stress big cross section and characteristics,the use of the theory analysis and numerical calculation method of combining the analysis the mine auxiliary shaft ma3 tou2 door the stability of surrounding rocks condition,through the research to determine the pier near the door rock destruction area and discharging pressure with distribution,and accordingly determine a horse surrounding rock near the door reinforcing supporting range（i.e.not stable area）,the proposal is in danger areas are ＂anchor ＋ nets ＋ steel beam with＂ combined support,and even support used during application.