定向顺层长钻孔瓦斯抽采效果分析  

Effect Analysis of Gas Drainage by Directional Long Boreholes

作　　者：闫卫红 

机构地区：[1]山西霍尔辛赫煤业有限责任公司,山西长治046600

出　　处：《煤炭技术》2017年第12期164-165,共2页Coal Technology

摘　　要：根据主运大巷揭露的煤层瓦斯赋存情况,原始瓦斯含量11~13 m^3/t,瓦斯压力0.48 MPa,掘进期间瓦斯涌出量偏大,严重影响掘进进度。为了解决掘进瓦斯问题,引入千米定向钻机,施工定向长钻孔,钻孔抽采60 d后,测定瓦斯含量低于8 m^3/t,掘进期间瓦斯浓度远远低于抽采前,实践证明,此项技术瓦斯治理效果显著。According to the transport and alleys of coal seam gas occurrence, primitive gas content after 11-13 m3/t, gas pressure 0.48 MPa, the gas emission during the slants big, seriously affect the advance. In order to solve the problem of excavating the gas, introducing kilometer directional drilling, directional drilling, construction drilling extraction after 60 d, the determination of gas content lower than after 8 m3/t, the during the gas concentration is much lower than before extraction, practice has proved that the technology of gas control effect is remarkable.

关 键 词：瓦斯赋存 千米定向钻机 定向长钻孔 

分 类 号：TD712[矿业工程—矿井通风与安全]