中厚煤层高瓦斯采煤工作面综合瓦斯治理技术应用

Application of comprehensive gas control technology in high gas coal mining face of medium thick coal seam

为解决沙曲二号煤矿4303中厚煤层高瓦斯采煤工作面瓦斯浓度较高的问题,应用了综合瓦斯治理技术,包括通过裂隙带抽采采空区瓦斯、通过预埋管路抽采采空区瓦斯、通过封闭处理隔离采空区瓦斯等。该工作面应用综合瓦斯治理技术后,上隅角瓦斯浓度基本稳定在0.35%,取得了理想的瓦斯治理效果,满足了采煤工作面安全生产的要求。

In order to solve the problem of high gas concentration in high gas coal mining face of 4303 medium-thick coal seam in Shaqu No.2 Coal Mine,comprehensive gas control technology was applied,including extracting gas from goaf through fracture zone,extracting gas from goaf through pre-embedded pipeline,and isolating gas from goaf through closed treatment.After the application of comprehensive gas control technology in the working face,the gas concentration in the upper corner is basically stable at about 0.35%,and the ideal gas control effect is achieved,which meets the requirements of safe production in the coal mining face.