缓倾斜煤层开采上保护层卸压抽采瓦斯数值模拟分析

Numerical Simulation on Gas Drainage from Boreholes in Buffer Inclination Coal-seam under Upper Protective Layer Mining

在建立煤岩体变形和瓦斯流动方程的基础上,运用COMSOL Multiphysics数值模拟软件模拟了谢一矿C_(15)上保护层开采后下方的C_(13)被保护层应力分布和瓦斯运移规律,系统研究了上保护层开采后下伏煤岩体的位移分布特征、卸压瓦斯运移规律及瓦斯抽采情况,可为卸压瓦斯抽采钻孔布置提供参考。

Based on the equation of deformation and gas flow, the model was established by COMSOL Multiphysics to study on the C133 coal seam＇s stress evolution, the gas migration and gas drainage situation after uncovering the C j5 coal seam. It can provide a reference for gas drainage from boreholes in buffer inclination coal-seam under upper protective layer mining.