旋挖机械清渣在嵌岩扩底桩中的应用  

Application of Sediment Cleaning with Rotary Drilling Machine in Rock Embedded Bottom-enlargement Pile Construction

作　　者：岳大昌 李明 郑体 刘丹 

机构地区：[1]成都四海岩土工程有限公司,四川成都610041

出　　处：《探矿工程（岩土钻掘工程）》2014年第8期50-52,共3页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：嵌岩扩底桩是一种端承型基桩,桩底沉渣的厚度直接影响基桩的承载力。某工程设计为嵌岩扩底桩,采用了旋挖机械清渣施工方法。实践证明,机械清渣能减少施工工序,提高施工效率,保证桩的施工质量。Rock embedded bottom-enlargement pile is a kind of end bearing pile, the thickness of sediment at the pile bot- tom has direct impact on the bearing capacity of pile foundation. The paper introduces an engineering of rock embedded bottom-enlargement pile which is constructed by sediment clearing with rotary drilling machine. It is proved by practice that sediment cleaning with rotary drilling machine can reduce construction procedure, improve the efficiency of construction and ensure the construction quality of pile.

关 键 词：旋挖钻进 机械清渣 嵌岩 扩底桩 

分 类 号：TU473.14[建筑科学—结构工程]