钻探冲洗液自孔口经钻杆与孔壁间，或双壁钻杆的内外管之间的环状空间向下行，到达孔底后又从钻杆或双壁钻杆内管上返到地表的一种相反方向循环方式的钻探和取样技术。冲洗液介质可以是水、泥浆或空气。 反循环钻探，按形成反循环液流在钻杆内上升的动力和方式，可分为三种类型：泵吸反循环钻探、气举（空气）反循环钻探、射流反循环钻探。
根据钻探技术的历史经验，建议应进行大直径反循环回转钻进井底过程的研究。
Based on the historical experience of drilling technology, it is proposed to study the bottom process of large diameter reverse circulation rotary drilling.
针对露天矿钻探施工中存在的问题，提出了利用贯通式反循环潜孔锤进行施工的新方法。
According to the exploration problems in an open-pit mine, a new drilling method using reverse circulation DTH hammer drill is put forward.
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。
The hollow-through DTH hammer drilling techniques with whole hole reverse circulation is adopted, it is proved that this technique can resolve drilling.
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