顶板岩层定向卸压瓦斯抽采钻孔钻进关键技术  

The key technology for drilling pressure-releasing gas drainage hole in roof strata

作　　者：金新[1,2] 

机构地区：[1]成都理工大学,四川成都610059 [2]中煤科工集团西安研究院有限公司,陕西西安710077

出　　处：《煤田地质与勘探》2016年第3期124-127,共4页Coal Geology & Exploration

摘　　要：顶板高位孔是治理采空区瓦斯的主要途径之一。在施工过程中,会遇到岩层开分支困难、目标层位的失制、非稳定地层处的纠偏等难题,它有别于煤层定向钻孔施工,阐述了顶板岩层定向卸压瓦斯钻孔施工的关键技术,对顶板定向长钻孔施工具有重要意义。High-level hole in roof is one of the major approaches to control the gas in gob. During drilling, prob-lems such as difficulty of branching in stratum, out-of-control of the target horizon and rectifying deviation at un-stable formation may be encountered. It is different from in-seam directional drilling. The paper elaborated the key technology for drilling of directional pressure-releasing gas drainage hole in roof formation. It has important sig-nificance for drilling long hole in roof.

关 键 词：煤矿 定向钻孔 轨迹 开分支技术 

分 类 号：P634[天文地球—地质矿产勘探]