深部高瓦斯沿空留巷工作面立体瓦斯抽采技术及应用  

Multi-dimensional Gas Drainage Technology and Application in Deep High-gas Gob Side Entry Retaining Working Face

作　　者：吴建宇 闵瑞 WU Jianyu;MINRui(Goal Mine Ventilation Department,China Pingmei Shenma Group,Pingdingshan 467000,China;School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China)

机构地区：[1]中国平煤神马集团煤矿通风处,河南平顶山467000 [2]河南理工大学安全科学与工程学院,河南焦作454003

出　　处：《煤炭技术》2022年第3期157-159,共3页Coal Technology

摘　　要：深部高瓦斯沿空留巷工作面具有瓦斯涌出量大、透气性差、抽采难度大特点,针对各瓦斯源,提出了多元立体抽采技术。通过本煤层钻孔预抽瓦斯、高位钻孔抽采戊组邻近层卸压瓦斯、裂隙带高位钻孔抽采和下向拦截钻孔抽采丁组煤卸压瓦斯等手段,有效控制了工作面瓦斯浓度。瓦斯抽采效果考察表明,回采面推进对邻近层卸压瓦斯抽采有关键影响,高位裂隙带瓦斯抽采钻孔层位为11.3~14.75倍采高时有最佳瓦斯抽采效果。通过瓦斯源头控制的立体抽采技术,实现了工作面安全高效回采。For deep high-gas gob side entry retaining working face,it has the characteristics of large gas emission,poor permeability and difficult extraction.In view of each gas source,the multi-dimensional drainage technology is put forward to control the gas in the mining face.The gas concentration of working face is effectively controlled by means of gas drainage boreholes in the working seam,high-level gas drainage boreholes for group E coal seams,high-level borehole extraction in the fracture zone and downward interception boreholes for drainage of group D.The analysis of gas drainage data shows that the advance of mining face has a key impact on the pressure relief gas drainage of adjacent coal seams,and the best gas drainage effect can be obtained when the gas drainage borehole position in the high fracture zone is 11.3 to 14.75 times of mining height.Through the multi-dimensional drainage technology of gas source control,the safe and efficient mining of working face is realized.

关 键 词：沿空留巷 Y形通风 立体瓦斯抽采技术 卸压瓦斯 

分 类 号：TD712[矿业工程—矿井通风与安全]