煤与瓦斯突出综采工作面浅孔抽放深孔卸压技术研究与应用

贵州矿区煤层透气性差,进行本煤层抽放难度较大,为提高抽放效果,以新田煤矿14采区为研究背景,利用钻屑量法测了煤壁应力横三区,研究并试验三花眼布置方式,按照2 d1个循环,长短钻孔配合,达到长钻孔卸压、短钻孔抽采交叉迈步式浅孔抽放技术。在回采工作面生产过程中,取得良好的效果。

Research and Application of Fully Mechanized Working Face in Coal and Gas Outburst of Shallow Hole Drainage Hole Pressure Relief Technology

Guizhou mining area coal seam permeability difference,the coal seam is difficult,in order to improve the suction effect,Xintian 14 coal mining area as the research background,the amount of drilling method to measure the coal wall should be three force cross,study and test three openings layout,according to a two day cycle length,bored with,to achieve long borehole pressure relief,the short hole drainage cross step type shallow hole drainage technology.In the production of working face in the process,and achieved good results.