关键词: 低透气性, 薄煤层, 瓦斯治理工程, 高位钻孔, 下向钻孔

Abstract: Based on the practice of gas control engineering in low permeability thin seam, according to the introduction of advanced technology, to build the technology system of gas control and increasing the investigation of gas control engineering, and using the coal seam, high drilling, down drilling, on the corner drainage pipe and drainage of goaf comprehensive gas control method for a variety of extraction methods drainage effect analysis, to determine the characteristics of the various extraction methods and drilling layout parameters. Gas control in adjacent layers is key in the mining process of thin seam, so that gas extraction accounted for more than the entire face amount of 70% of gas emission, gas drainage pumping station concentration is maintained at 21 to 25 percent, the methane concentration workface is reduced to 0.35% or less, a strong guarantee for the safe production of the mine.