以古汉山煤矿1605回风巷作为研究对象，采用理论计算获得上覆基本顶岩层断裂线位置，确定合理的煤柱宽度范围。建立大型三维数值模型，研究了回采期间超前工作面不同位置处的巷道围岩偏应力及塑性区分布状态，确定了超前工作面加固范围；得出了工作面回采稳定后沿空巷道顶板、实体煤及煤柱帮塑化程度与偏应力分布特征，揭示了深部厚煤层沿空掘巷围岩破坏机理，提出了“巷帮长短锚索搭配固帮+顶板锚杆配合长短锚索联合控顶”的围岩综合治理技术，使得巷道围岩变形处于安全限制范围内。

 Taking No.1605 return airway of Guhanshan Mine as the research object, the fracture line position of overlying main roof strata was obtained by theoretical calculation, and the reasonable width range of coal pillar was determined. A large three-dimensional numerical model was established to study the distribution of deviatoric stress and plastic zone of roadway surrounding rock at different positions of advanced working face during mining, and the reinforcement range of advanced working face was determined. The plasticization degree and deviatoric stress distribution characteristics of the roof, solid coal and coal pillar side of the gob-side roadway after the mining stability of the working face were obtained, and the failure mechanism of the surrounding rock of the gob-side roadway in the deep thick coal seam was revealed. The comprehensive control technology of the surrounding rock of ' long and short anchor cables in the roadway side with solid side + roof bolt with long and short anchor cables combined with roof control ' was put forward, which made the deformation of the surrounding rock of the roadway within the safety limit.