杨柳煤矿地面“L”型井瓦斯抽采技术工程实践

Engineering Practice of Gas Drainage Technology for Surface"L"Type Well in Yangliu Coal Mine

为解决井下预抽煤层瓦斯区域治理措施工程量大、钻孔利用率低、覆盖范围小等问题,提出试验实施地面“L”型钻井技术,工作面回采过程中同时抽采邻近层卸压瓦斯和本煤层采空区瓦斯,实现瓦斯治理的安全、集成、高效。

In order to solve the problems of large amount of work,low utilization rate of boreholes and small coverage of underground pre drainage coal seam gas area control measures,it is proposed to test and implement the surface"L"type drilling technology.In the process of working face recovery,the pressure relief gas from adjacent strata and the gas from the goaf of this coal seam are drained at the same time,so as to realize the safety,integration and high efficiency of gas control.