【摘要】 针对深井高应力沿空巷道围岩变形失稳这一技术难题，以刘庄煤矿131304工作面和131306工作面为工程背景，通过数值模拟、围岩应力传递机理分析，对比研究了钻孔卸压与未钻孔卸压2种工况条件下采场覆岩破裂演化规律。结果表明，卸压钻孔有效阻断了采动应力的叠加效应，卸压钻孔可以主动引导采动应力释放路径，形成高效的应力释放通道；超前支承压力区由钻孔附近向顶板延伸，这种应力重分布有助于降低巷道围岩的局部应力集中程度；卸压钻孔在顶板形成了一道破裂带阻隔屏障，这种破裂带屏障起到了应力隔断的作用，削弱了巷道周围的应力集中效应，降低了巷道及煤柱区域的应力，有效保护了巷道围岩的稳定。更多还原

【Abstract】 To address the technical challenge of surrounding rock deformation and instability in deep well high-stress gob-side entry, taking the No.131304 and No.131306 working faces of Liuzhuang Coal Mine as the engineering background, through numerical simulations and analysis of stress transfer mechanisms in surrounding rock, a comparative study was conducted on the fracture evolution characteristics of overlying rock under two conditions: drilling pressure relief and non drilling pressure relief.The results demonstrate that the pressure relief drilling effectively interrupts the superposition effect of mining-induced stress, the pressure relief drilling can actively guide the release path of mining-induced stress, forming highly efficient stress relief channels; the advanced abutment pressure zone extends from the vicinity of the drilling to the roof, and this stress redistribution helps reduce local stress concentration in the surrounding rock of the roadway; the pressure relief drilling forms a rupture zone barrier on the roof, which plays a role in stress isolation, weakens the stress concentration effect around the roadway, reduces the stress in the roadway and coal pillar areas, and effectively protects the stability of the roadway surrounding rock.更多还原