风动潜孔锤在某大桥锚固桩中的应用

Application of Pnenmatic Burrow Hammers to Anchoring and Fixing Piles of a Big Bridge

空气潜孔锤钻进新技术应用于锚固桩工程中,在我省钻探上属首例.本文主要介绍了使用普通水井钻机进行空气潜孔锤钻进的一些具体作法和经验,并通过20条桩孔219m的生产试验证明,潜孔锤钻进新技术比老的合金、钢粒钻进具有速度快、效率高、质量好、成本低等优点.

Using air burrow hammers to anchor and fix piles is a new drilling of our province. This paper mainly introduces some comcrete methods and practical experience of using common water-well drilling machines to do air burrow hammer drilling. A producttion test of twenty pile burrows (219m) shows that this new technique has more advantages of fast speed, great efficiency, good quality and low cost, etc. than old techniques of using alloy or steel-grain drilling machines.