半孤岛综放工作面采空区瓦斯治理技术

The technique of goaf gas treatment of the semi-isolated island fully mechanized caving face

针对半孤岛综放工作面存在的采空区遗煤多、瓦斯涌出量大、工作面瓦斯异常涌出和瓦斯超限严重问题,在对综放工作面瓦斯涌出特点进行分析的基础上,结合综放工作面的实际情况,采用邻近采空区抽放、采空区埋管抽放和高位钻孔抽放相结合的瓦斯抽放技术,有效防止了工作面瓦斯超限及后部采空区和邻近采空区瓦斯的异常涌出,保障了工作面的安全生产。

Aiming at the much left coal in the goaf and large gas emission quantity and abnormal gas emission and serious gas overrun of the semi-isolated island fully mechanized caving face,based on the analysis of gas emission feature of fully mechanized caving face and combined with the real situation,the gas drainage technology combined gas drainage in the adjacent seams goaf and buried pipe drainage in the goaf and the high level borehole drainage in roof was adopted,which effectively prevented the gas overrun of the fully mechanized caving face and abnormal gas emission of adjacent seams goaf and ensure the safety production of working face.