论文部分内容阅读
介绍了钻孔灌注桩反循环成孔作业的原理,指出反循环成孔工艺与正循环成孔工艺相比,具有钻进速度和成桩效率提高、孔壁稳定、成孔质量好、混凝土浇筑质量能够得到有效保障等优点。最后介绍了工程实例。
The principle of countercirculation and hole forming for bored piles was introduced. It was pointed out that the countercirculation and hole - forming technology had the advantages of higher drilling speed and improved pile forming efficiency, stable hole wall, better hole quality and better performance of concrete pouring Quality can be effectively protected and so on. Finally introduced the project example.