西铭矿48708工作面抽采采空区漏风对上隅角瓦斯的治理

Treatment of gas in upper corner by air leakage in goaf of mining face

针对西铭矿48708综采工作面煤层赋存情况,采用后退U型通风方式分析工作面及采空区瓦斯涌出源,计算工作面配风量及采空区漏风量。采用中高位走向长钻孔及高位裂隙带钻孔抽采邻近层涌出的瓦斯;采用大孔径煤柱孔插管及密闭埋管抽采采空区漏风,改变上隅角风流状态,解决漏风携带瓦斯问题,为上隅角瓦斯本质治理提供了借鉴。

in view of the occurrence of coal seam in 48708 fully mechanized mining face of Ximing Mine,the gas outlet source of working face and goaf is analyzed by backward U ventilation mode,and the air distribution capacity and air leakage in goaf are calculated.In order to solve the problem of air leakage carrying gas,the large diameter coal pillar hole intubation and closed buried pipe are used to drain air in goaf,to change the state of upper corner air flow and to solve the problem of air leakage carrying gas.It provides reference for gas essence control in upper corner.