岩溶地质条件下旋挖灌注桩基础施工技术  

Construction Technology of Rotary Excavation Cast-in-Place Pile Foundation Under Karst Geological Conditions

作　　者：邵洋 SHAO Yang(CCCC Fouhth Harbor Engineering Co.Ltd.,Guangzhou 528000,China)

机构地区：[1]中交第四航务工程局有限公司,广州528000

出　　处：《工程建设与设计》2025年第2期125-127,共3页Construction & Design for Engineering

摘　　要：在岩溶发育比较好的地区会有竖向溶洞存在,见洞率非常高,溶洞充填物力学性质比较差,因此,在使用旋挖成孔灌注桩施工技术时,易于出现漏浆、溶洞内充填物塌孔的问题。论文以湖南长沙某施工项目为研究对象,对不同地质条件下的相关施工参数信息进行了分析,总结了大量的成功经验,对推动此类工程项目施工建设的发展提供了借鉴。There are vertical karst caves in areas with good karst development,the rate of caves is very high,and the mechanical properties of karst cave filling are relatively poor.Therefore,the problems of grouting leakage and hole collapse of filling materials in karst caves are easy to occur when the construction technology of rotary excavation or perforated cast-in-place pile is selected.This paper takes a construction project in Changsha,Hu’nan Province as the research object,conducts a analysis of the relevant construction parameter information under different geological conditions,summarizes a lot of successful experience,and provides a reference for promoting the development of construction of such projects.

关 键 词：岩溶极发育 钻孔灌注桩 地质钻孔预注浆 双钢护筒 

分 类 号：TU753.3[建筑科学—建筑技术科学]