气举反循环回旋钻进成孔工艺在马来西亚复杂地层中的应用

Application of Air Lift Reverse Circulation Drilling Cyclotron Process Complex Stratum in the Malaysia

钻孔桩施工工艺经过不断的完善和更新，已经非常成熟。在已建桥梁中，摩擦桩居多，地质状况以砂土层为主。嵌岩桩，特别使嵌岩深度达20多m，桩长超过100 m的桩为少数。现以马来西亚槟城二桥BATU KAWAN 段80根钻孔桩基为依托展开研究工作。

The construction technology of bored pile, after constant improvement and update, is already very mature. In the bridge, friction piles are the main piles and geological condition is san layer. Rock socketed pile, especial y the depth of rock socketed is more than 20 m, and the pile length is more than 100 m is a few. The research work is based on 80 bored piles in the BATU KAWAN segment of the second bridge of Bingcheng city in Malaysia.