钻孔灌注桩现在被广泛地应用于高层建筑、公路桥梁等工程的基础工程.但目前钻孔灌注桩仍大量使用较为落后的正循环钻进、正循环清孔成孔工艺。本文介绍了反循环成孔工艺的运用,以及对于工程质量和经济效益带来的影响。 Drilled cast-in-place piles are now widely used in the foundation engineering of high-rise buildings, roads and bridges. However, borehole cast-in-situ piles still use a relatively backward positive circulation drilling and positive circulation hole-removing hole forming process. This article describes the use of reverse circulation hole-making technology, and the impact on engineering quality and economic benefits.