低透气性煤层交叉钻孔预抽试验研究  

Experimental Study on Gas Drainage with Vertical Crossing Boreholes in Low Permeability Mine

作　　者：薛彦平 XUE Yan-ping(Shenyang Research Institute Co., Ltd., China Coal Technology and Engineering Group, Shenyang 110016, China)

机构地区：[1]煤科集团沈阳研究院有限公司,沈阳110016

出　　处：《煤炭技术》2017年第5期191-193,共3页Coal Technology

基　　金：国家"十三五"科技重大专项(2016ZX05045-004)

摘　　要：针对工作面瓦斯涌出量大,抽采量小,预抽效果差等问题,提出了利用交叉钻孔预抽瓦斯。介绍交叉钻孔、平行顺层密集钻孔2种不同钻孔布置方式的强化预抽原理。在现场进行试验,分别在同一工作面划分3个区域布置立体交叉钻孔、平面交叉钻孔和平行顺层密集钻孔3种方式的钻孔,考察各方式的抽采参数以及工作面在进入各试验钻孔区域后的瓦斯涌出量情况,结果显示立体交叉钻孔抽采最佳。According to the large gas emission volume and gas drainage difficulty, the technology of crossed boreholes along seam was proposed. The gas pre-drainage mechanism using crossing boreholes dense boreholes were introduced. The experiment was done at three different zones including vertical crossing boreholes; plane crossing boreholes; dense boreholes in the same working face. The drainage parameters and gas emission volume were tested, and the result showed that the effect of gas drainage using vertical crossed boreholes was the best way.

关 键 词：立体交叉钻孔 平面交叉钻孔 密集顺层钻孔 

分 类 号：TD712[矿业工程—矿井通风与安全]