针对干旱、半干旱地区缺水的特点，结合化探取样的要求，采用全液压车载钻机空气潜孔锤钻进工艺。
This paper discusses the application of full-hydraulic track driller with automobile chassis in the arid and semiarid areas.
本文主要论述了空气潜孔锤跟管取心钻进规程。
This paper discusses the procedures of DTH hammer and core drilling with casing.
通过对空气潜孔锤跟管钻进钻具的受力分析，得到影响潜孔锤跟管钻进速度和跟管深度的因素。
By analysis of enforcement of drilling tools of air downhole hammer's following pipe, the factors affecting the drilling speed and depth of the following pipe are obtained.
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