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钻孔抽采煤矿井下瓦斯,是我国煤矿业高效治理、预防瓦斯灾害的重要措施。为深入探讨井下瓦斯定向抽采钻孔技术在提高煤矿安全性中的关键作用,笔者以概述井下瓦斯预抽技术为出发点,分析了扇形布孔、倾向布孔、常规钻孔布孔的具体内容,并在此基础上,全面介绍了井下瓦斯定向抽采钻孔技术,诸如顺层瓦斯钻孔布置技术、井下瓦斯穿层抽采技术与井下瓦斯钻孔施工技术,以及定向钻进系统的主要内容。
Borehole extraction of coal mine gas is an important measure for efficient coal mine management and prevention of gas disasters. In order to further explore the key role of directional gas drainage in underground mine in improving coal mine safety, the author starts with an overview of underground gas pre-pumping technology and analyzes the specific contents of fan-shaped holes, inclined holes and conventional holes , And on this basis, fully introduced the underground gas directional drilling technology, such as bedding gas borehole layout technology, underground gas through layer mining technology and underground gas drilling technology, as well as the main directional drilling system content.