【摘要】 为保证80101工作面回风巷在沿空掘巷及工作面回采期间的围岩稳定,针对回风巷的具体地质条件,在沿空掘巷阶段采用静态支护手段,工作面回采阶段,在原有支护的基础上采用动态叠加支护,对煤柱帮进行锚注加固,对实体煤帮打设卸压孔。结果表明,沿空巷道围岩的变形量得到了有效控制。更多还原

【Abstract】 In order to ensure the surrounding rock stability of return air roadway in 80101 working face during goaf driving and working face mining, static support method is adopted in the stage of roadway excavation along the goaf according to the specific geological conditions of return-air roadway. In the mining stage, dynamic superposition for support is applied on the basis of the original support, coal pillars are reinforced by bolting and grouting, and pressure relief holes are set for entity coal. The results show that the deformation of the surrounding rock in the roadway is effectively controlled.更多还原