This paper discusses the rock crushing mechanism of DTH hammer drilling and factor influencing the effect of DTH hammer broken rock.
本文论述了潜孔锤钻进的岩石破碎机理以及影响潜孔锤碎岩效果的因素。
The hollow-through DTH hammer drilling techniques with whole hole reverse circulation is adopted, it is proved that this technique can resolve drilling.
贯通式潜孔锤反循环钻进技术是一种先进的钻探方法，适用于复杂地层中的地质勘探以及各类钻孔工程。
8 the rig is suitable for various drilling methods such as carbide bit drilling, auger drilling, DTH hammer drilling, follow - up casing drilling, etc. 3.
钻机可适用多种钻进工艺方法，如合金回转钻进螺旋钻进潜孔锤钻进跟管钻进等。
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