近距离下保护层开采卸压瓦斯运移规律研究

Research on Pressure Relief Gas Flow Law of Below Protective Seam Mining under Close Distance

为研究近距离下保护层开采卸压瓦斯运移规律,采用COMSOL数值模拟和现场实测方法,研究了保护层开采后上覆岩层垂直应力的变化规律、被保护层瓦斯压力分布规律、透气性系数变化规律和卸压范围。

In order to study the near distance lower protective seam mining pressure gas flow law,adopt COMSOL numerical simulation and field measurement method,study the vertical stress of the overlying strata after the protective seam mined,gas pressure distribution of the protected layer,permeability change law coefficient and pressure relief range.