Research on Gas Drainage Technology of Low-permeability and High-gas Bedding
The Yangquan Kaiyuan Coal Mine 3# coal seam is a typical low-permeability high-gas coal seam,which has the problem of unsatisfactory gas drainage effect.For the status quo,the current status of gas drainage in Kaiyuan Coal Mine is summarized,and the main influencing factors affecting gas drainage are analyzed.Then the gas drainage of the 3# coal seam is carried out by using the three-dimensional cross-drilling gas drainage technology.Field practice shows that after the implementation of this technology,the average 100m extraction of the 3# coal seam working face reaches 0.0212m3/min.hm,and the attenuation coefficient is 0.0707d-1,which has achieved good drainage effect.
Gas drainage High gas Low permeability Three-dimensional cross drilling
Qiao Wei
Gas Research Branch,China Coal Technology Engineering Group Chongqing Research Institute,Chongqing 400037,China;State Key Laboratory of the Gas Disaster Detecting Preventing and Emergency Controlling,Chongqing 400037,China
国际会议
青岛
英文
48-52
2018-11-03（万方平台首次上网日期，不代表论文的发表时间）