摘要
司马煤业公司1211综采工作面运输顺槽采用底抽巷穿层钻孔预抽瓦斯,每隔20 m布置一个钻场,每个钻场布置5个钻孔,按巷道腰线往上1.2 m开始布孔,间隔0.3 m依次布孔。采用聚氨脂结合水泥浆进行封孔。通过预抽瓦斯消除了工作面煤层突出危险性,成效显著。
The paper presents the application of gas drainage by crossing hole in conveyor gateway of 1121 fully-mechanized working face in Sima Coal Industry Co. to eliminating the seam outburst hazard with remarkable effect , in which a drilling field with five drilling holes is laid every 20 m, drilling holes are distributed 1.2 m above the waist line of roadway and in sequence with 0.3 m intervals, and are sealed with polyurethane and cement slurry
出处
《江西煤炭科技》
2017年第2期131-132,共2页
Jiangxi Coal Science & Technology
关键词
瓦斯抽采
穿层钻孔
效果分析
gas drainage
crossing hole
effect analysis
