长距离定向钻孔预抽瓦斯区域消突技术研究  

Study on Elimination Technology of Gas Pre-draining Area in Long-distance Direct Drilling

作　　者：王晓东 Wang Xiao-dong(Shanxi Shigang Coal Industry Co.,Ltd.,Shanxi Zuoquan 032600)

机构地区：[1]山西石港煤业有限责任公司,山西左权032600

出　　处：《山东煤炭科技》2020年第7期98-100,108,共4页Shandong Coal Science and Technology

摘　　要：为降低煤层内的瓦斯压力和突出危险性,石港煤业设计在15107工作面应用长距离定向钻孔预抽瓦斯区域消突技术。现场应用表明,各个钻孔抽采瓦斯最低浓度均在40%以上,瓦斯抽采纯量在0.5m^3/min以上,钻孔覆盖区域煤层瓦斯抽采率达到82.2%,抽采效果良好,煤层瓦斯含量和压力均降至突出临界指标以下,消突效果明显。In order to reduce the gas pressure and outburst risk in coal seam,Shigang Coal Industry designed to apply long-distance directional drilling gas drainage area outburst elimination technology in 15107 working face.The field application shows that the minimum gas concentration of each borehole is above 40%,the pure gas drainage volume is more than 0.5m3/min,the gas drainage rate of coal seam in the area covered by boreholes reaches 82.2%,the drainage effect is good,the gas content and pressure of coal seam are reduced below the outburst critical index,and the outburst elimination effect is obvious.

关 键 词：数值模拟 定向钻孔 预抽瓦斯 区域消突 

分 类 号：TD713.3[矿业工程—矿井通风与安全]