水平定向钻井（HDD）是一种非开挖方法，它提供了一种安装替代方案，可以提供许多好处 而不是传统的明切。硬盘驱动器可以在对地面活动几乎没有干扰的情况下实现，需要更少的工作空间，并且 可能比明挖法执行得更快。此外，它还可以简化或消除某些许可程序。这种 近年来，市政地下基础设施系统的安装量急剧增加。虽然目前有 由于没有针对任何管道材料安装硬盘的国家标准，硬盘管道安装正变得越来越普遍 这可能是当今发展最快的非开挖施工方法。本文涉及的与硬盘相关的主题包括:程序；钻井泥浆；球墨铸铁管硬盘的安装方法，包括插装法和装配线法；联合应用和偏转； 半径拉力；管孔路径摩擦；拉力；拉头；腐蚀控制。包括4个参考文献、表格、图表。

Horizontal Directional Drilling (HDD) is a trenchless methodology that provides an installation alternative that can offer a number of benefits over traditional open-cut. HDD can be implemented with very little disruption to surface activities, requires less working space, and may be performed more quickly than open-cut methods. Also, it can simplify or eliminate certain permitting processes. This type of installation of municipal underground infrastructure systems has seen a dramatic increase in recent years. Although there are currently no national standards regarding HDD installations for any pipe material, HDD pipeline installations are becoming more and more common and may be the fastest growing trenchless construction method today. Topics related to HDD that are covered in this paper include: procedure; drilling mud; installation methods for HDD of ductile iron pipe including cartridge and assembled-line methods; joint applications and deflections; radius pulls; pipe bore path friction; pulling force capability; pulling heads; and, corrosion control. Includes 4 references, table, figures.