采动卸压瓦斯抽采以孔代巷技术研究与工程实践  

Research and engineering practice of mining-induced pressure relief gas extraction of replacing roadway with borehole technology

作　　者：陶云奇[1,2] 张剑钊 郭明功 于红 潘仁杰[2] TAO Yunqi;ZHANG Jianzhao;GUO Minggong;YU Hong;PAN Renjie(School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China;School of Resources and Safety Engineering,Henan University of Engineering,Zhengzhou 451191,China;No.8 Mine,Pingdingshan Tian’an Coal Mining Co.,Ltd.,Pingdingshan 467000,China;Yongcheng Coal Power Holding Group Co.,Ltd.,Yongcheng 476600,China)

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454003 [2]河南工程学院资源与安全工程学院,河南郑州451191 [3]平顶山天安煤业股份有限公司八矿,河南平顶山467000 [4]永城煤电控股集团有限公司,河南永城476600

出　　处：《矿业安全与环保》2022年第5期43-48,共6页Mining Safety & Environmental Protection

基　　金：河南工程学院博士培育基金资助项目(DKJ2019002,DKJ2018020);2021年河南省国家级大学生创新创业训练计划项目(202111517008)。

摘　　要：为解决“U”形通风工作面上隅角及回风流瓦斯治理难题,在分析采动卸压瓦斯抽采以孔代巷技术原理与优势的基础上,根据工作面上覆岩层垮落规律确定了采动卸压瓦斯富集区,在平煤股份八矿己_(15)-15050工作面里段520 m施工顶板高位定向长钻孔代替高抽巷,进行采动卸压瓦斯抽采。试验结果表明:定向钻孔在3个月抽采期内,工作面上隅角及回风流瓦斯浓度均保持在0.4%~0.6%,工作面顶板裂隙带高浓度瓦斯区在垂向距煤层顶板25 m以上,瓦斯治理成本比高抽巷节约67.9%,治理工期可节省2/3,实现了矿井安全生产和降本增效的目标。In order to solve the gas treatment problem of upper corner and return air flow by“U”-shaped ventilation,based on the technical principle and advantage analysis of mining-induced pressure relief gas extraction of replacing roadway with borehole,the mining-induced pressure relief gas enrichment area was determined according to the overburden collapse law of the working face.The high-level directional long drilling of the roof was constructed at 520 m in the inner section of Ji_(15)-15050 working face of No.8 coal mine of Pingmei Co.,Ltd.to replace the high extraction roadway for mining-induced pressure relief gas extraction.The test results show that during the three months extraction period of directional drilling,the concentration of the upper corner and return air gas in the working face is maintained at 0.4%to 0.6%,the high concentration gas zone in the fracture zone of the roof in the working face is above 25 m vertically from the roof of the coal seam,the cost of gas treatment is 67.9%lower than that of the high level extraction roadway,and the treatment period is shortened by 2/3,which realizes goal of the mine safety production,cost reduction and efficiency increase.

关 键 词：瓦斯抽采 采空区 上隅角 裂隙带 以孔代巷 高位定向长钻孔 

分 类 号：TD712.6[矿业工程—矿井通风与安全]