关键词: 煤层透气性, 影响因素, 瓦斯抽采, 底板穿层钻孔

Abstract: Lutaishan coal limited company of shanxi coal import and export group is high gas emission well, all of poor permeability of coal seam, difficulty of gas emission and super close distance of upper and lower adjacent layers are main problems, which are the main factors cause disallowed gas concentration appears frequently in the process of underground mining, normal production is severely affected. Based on the analysis of the existing gas problems of Lutaishan coal mine, the main gas problems of the mine are analyzed and the main factors leading these problems are proposed at the same time. Combining with the engineering practice of gas control in the process of mine production, the control system of gas drainage and extraction is proposed according to the characteristics of coal seam occurrence. Engineering practice shows that drilling gas drainage technology of fool wearing lay cooperating with gas drainage technology of bedding and short hole can be used to solve gas control problem in seams with parting band, and the effect is quite remarkable.