在介绍国内外煤矿井下近水平定向钻进技术发展的基础上,分析和总结了定向钻机、随钻测量系统、配套钻具及定向钻进工艺的主要特点、适用范围和工艺方法。现场应用验证了煤矿井下近水平定向钻进技术在施工中具有钻进效率高、钻孔轨迹控制精度高(水平位移小于孔深的0.5%,上下位移小于孔深的0.1%)和施工可操作性强的特点。基于技术发展和现场应用现状,对煤矿井下近水平定向钻进技术与装备的发展趋势进行了展望。

Based on the introduction on development of the horizontal directional drilling technology at home and abroad underground coal mine,the paper analyze d and summarized the major features,application scope and technique method of the directional drilling rig,the measuring system with the drilling,matched drilling tools and the directional drilling technique.In combination with the site applications,the paper fully stated the high drilling efficiency in the operation of the horizontal direction al drilling technology in underground coal mine,high control accuracy of the borehole tracing(the horizontal displacement 0.5% less than the borehole depth and the top and low displacement 0.1% less than the borehole depth) and the features of the high construction operation.Based on the technical development and site application,t he paper had prospects on the technology and equipment of the horizontal directional drilling in underground mine.

国家科技重大专项资助项目(2011ZX05041-001)；