泥浆在岩溶区旋挖成孔工艺中的应用  

Application of slurry in rotary hole forming process in karst area

作　　者：刘城 陈俊华 左文贵[2] 李烈见 王旭 Liu Cheng;Chen Junhua;Zuo Wengui;Li Liejian;Wang Xu(Hunan Foundation Corporation,Changsha 410083;School of Geosciences and Info-Physics,Central South University,Changsha 410083)

机构地区：[1]湖南基础工程公司,长沙410083 [2]中南大学地球科学与信息物理学院,长沙410083

出　　处：《工程建设》2019年第11期67-70,76,共5页Engineering Construction

摘　　要：岩溶地区地层复杂,旋挖钻孔灌注桩施工需要采用泥浆护壁。分析了膨润土泥浆的组成、物理特性、作用机理,通过工程施工实例,阐述了泥浆制备工艺流程和泥浆在旋挖钻孔灌注桩工艺中的应用效果。The strata of karst area are complex,and the slurry is needed for wall protection during rotary-drilled cast-in-place pile construction. The composition,physical characteristics and function mechanism of the bentonite slurry are introduced. Through an example of engineering construction,the process flow of slurry preparation and application of slurry in the rotary-drilled cast-in-place pile technology are reviewed.

关 键 词：岩溶地区 旋挖钻孔灌注桩 泥浆护壁 施工工艺 

分 类 号：TU753.3[建筑科学—建筑技术科学]