抽放瓦斯定向钻孔施工技术的研究

Research on Technology and Equipment of Controlled Directional Borehole for Drawing out of Gas from Coal Mine

摘要:

介绍了抽放瓦斯定向钻孔施工技术的主要设备、钻具及仪器，组合钻具及钻进工艺参数，并通过几个工程实例，说明了该项技术的应用效果。

Abstract:

The main equipment, drilling tools, instrument, borehole assembly and drilling parameters for drilling controlled directional gas drawing out hole are introduced. The effects of this technology are explained through several engineering cases.