石门揭煤工作面水力压裂瓦斯增透抽放工艺  

Gas Drainage Technology of Permeability Improvement by Hydraulic Fracturing of Coal Uncovering Face in Crosscut

作　　者：原育锋 李翔 YUAN Yufeng;LI Xiang(Hongsheng Construction and Engineering Company Limited,Shanxi Jincheng Coal Group,Jincheng 048006,China)

机构地区：[1]山西晋煤集团宏圣建筑工程有限公司,山西晋城048006

出　　处：《建井技术》2018年第4期25-27,14,共4页Mine Construction Technology

摘　　要：长平煤业芦家峪风井总进风石门施工中,需从底板揭露3号煤层,该煤层为高瓦斯低透性煤层。为提高瓦斯抽放效率,采用工作面高压水力压裂技术,对石门揭煤进行卸压增透,使该煤层提前达到揭煤条件,缩短抽放周期约54%。与传统瓦斯抽放相比,该项技术解决了施工预抽钻孔多、抽采半径小、抽采时间长等问题,效果明显。In a construction of the general air intake crosscut in Lujiayu Ventilation Shaft of Changping Coal Company,No.3 seam should be uncovered from the seam floor and the seam was a high gassy low permeability seam.In order to improve the gas drainage efficiency,a hydraulic fracturing technology was applied to the working face.A pressure released and permeability improved was conducted to the seam uncovering of the crosscut.Thus the seam was advanced to reach the seam uncovering condition.The gas drainage period was reduced by about 54%.In comparison with the conventional gas drainage,this technology could solve the many pre drainage boreholes,small radius of the gas drainage boreholes,long gas drainage time and other problems and the results of the technology were obvious.

关 键 词：石门揭煤 水力压裂 抽放半径 

分 类 号：TD263.41[矿业工程—矿井建设]