外错下分层综采工作面上隅角瓦斯治理技术研究  

Study on Gas Control Technology in Upper Corner of Fully Mechanized Mining Face with Outer Cross-section and Lower Slice

作　　者：晋树青[1] JIN Shu-qing(Yuecheng Coal Mine,Qinxiu Coal Industry Co.,Ltd.,Shanxi Jinmei Group Company,Jincheng 048000,China)

机构地区：[1]山西晋煤集团沁秀煤业有限公司岳城煤矿,山西晋城048000

出　　处：《煤炭技术》2020年第7期143-147,共5页Coal Technology

摘　　要：为解决岳城煤矿3#煤层下分层工作面回采过程中上隅角瓦斯超限问题,岳城煤矿在Ⅲ1210回风巷施工顶板走向高位钻孔,对上隅角采空区瓦斯进行集中抽采,解决Ⅲ1305下工作面上隅角瓦斯超限问题。试验结果表明:Ⅲ1210巷顶板走向高位钻孔实施后,有效抑制了采空区瓦斯向上隅角涌出,采空区瓦斯涌出量占工作面瓦斯涌出总量比例由55%~65%降至20%~30%。In order to solve the problem of gas overrun in the upper corner of the working face in the lower layer of 3#coal seam in Yuecheng coal mine,Yuecheng coal mine constructs high-level boreholes in the roof of return air roadway No.Ⅲ1210,and centralizes gas extraction in upper corner goaf to solve the problem of gas exceeding the limit in upper corner of working face No. Ⅲ1305(lower). The test results show that the gas emission from the goaf to the upper corner is effectively restrained after the implementation of the high-level borehole in the roof of roadway III 1210. The proportion of the gas emission from the goaf to the total gas emission from the working face is reduced from 55% ~65% to20%~30%.

关 键 词：上隅角 高位钻孔 瓦斯超限 采空区瓦斯涌出量 

分 类 号：TD713.2[矿业工程—矿井通风与安全]