Guizhou Fa'er Coal Mining Company Limited School of Mining,Guizhou University Mining and Safety Technologyand Engineering Center of Complicated Geologic Mine Guizhou Provincial Comprehensive Utilization Key Lab ofNon-Ferrous Minerals Resources Research Institute of Mine Gas Disaster Prevention and Coal Bed Methane Development,Guizhou University

基于贵州省煤层赋存复杂、煤层层间距小、煤层厚度薄、煤层及顶底板软等特点,以贵州发耳矿井为具体研究对象,分析了近距离薄煤层群三软综采工作面瓦斯治理难点,综合选取了顺层钻孔预抽、穿层钻孔预抽、高位钻孔抽采、采空区迈步式埋管抽采、采空区卸压瓦斯抽采、断层密集钻孔抽采等综采工作面立体瓦斯治理技术,有效解决了近距离薄煤层群三软U型通风综采工作面上隅角瓦斯超限问题,保证了工作面安全顺利回采,为类似矿井综采工作面瓦斯治理技术提供了借鉴。

Based on the seam complicated dispostion condition.small spacing between the seams.thin thckness of the seam,sof seam and roof an foor as well s other features of the sean in Guizhou.ook Guizhou Fa er Mine as the certain studly object.the paper analyzed the gas conrol dirficuties oful -mechanized coal mitng face with soft o soft foor and soft coalsean in contiguous thin seams group.The beding drling pre-draining rllig pre-draining acoss ock stratum,high level orehole pre-draining gas drainage in the gob through the step by ste line buried.,pressurereief gas rainagein the gob.densely borehole drainagein the fault and other gas control technology of the tul-mechanized coal mining face were comprehensively selected.The gas overlint roblems at the top coner ofll -mechanized c almining face with sof roof.soft foor and soft cal seam and U type ventlation in the contiguous thin seams group were effectively solved and the saely and sucessumining of the coal mining face was ensured.t provided references to the gas control technology ofthefall-mechanized coal mining face in sinilar mines.

贵州省重大应用基础研究资助项目(Z143160)；