运用沿空留巷Y型通风瓦斯抽采技术实现高瓦斯工作面无煤柱开采,改善通风方式,治理工作面上隅角与回风流中的瓦斯积聚。布置本煤层、邻近层抽采钻孔,采空区埋管抽采孔对工作面瓦斯进行抽采利用。瓦斯浓度与涌出量监测结果表明,瓦斯抽采效果良好,回风流中瓦斯浓度明显降低。 Adopting the Y-type ventilation gas drainage technology for gob-side entry, the coal pillar mining in high gas face is improved, the ventilation mode is improved, and the gas accumulation in the upper corner and the return air flow on the working face is controlled. Layout of the coal seam, adjacent layers of pumping drill holes, goaf hole burrowing holes on the face of gas extraction and utilization. Gas concentration and emission monitoring results show that the gas drainage effect is good, the return air flow in the gas concentration was significantly reduced.