青云煤业深井高地应力巷道支护方案优化

Optimization of Supporting Scheme of the High Ground Stress Roadway in Deep Well of Qingyun Coal Industry Co., Ltd.

青云煤业21210工作面回风顺槽因受到深井高地应力的影响,采用原支护方案时顺槽出现围岩变形大、破碎等问题。通过分析深井高地应力巷道围岩变形机理,针对采用原支护方案时出现的问题,在原支护方案的基础上提出2种优化支护方案并采用数值模拟方法对2种支护方案进行对比,由数值模拟结果得出方案二为最优方案,并根据矿压监测数据对所选择支护方案的合理性进行了验证。

The backwinding trough of the 21210 working face of Qingyun Coal Industry Co., Ltd. was affected by the high ground stress of the deep well, and when the original supporting scheme was adopted, the surrounding rock deformation and fracture occurred. By analyzing the surrounding rock deformation mechanism of the high ground stress roadway in deep well, this paper proposed two optimization support schemes for the problems in adopting the original support scheme, and compared the two support schemes by the numerical simulation method. It was obtained from the numerical simulation results that the second scheme was the optimal scheme, and the rationality of the selected support scheme was verified according to the mine pressure monitoring data.