小型注浆钢管桩在岩溶地基处理中的应用

Application of small-sized grouting steal pipe piles in the karst foundation treatment

岩溶地基的基岩面起伏较大,浅部往往发育着溶沟、溶槽及溶洞,给工程施工带来困难,处理起来费用高、难度大。贵港某厂搬迁项目的岩溶地基处理工程的成功实例,其小型注浆钢管桩在处理岩溶地基中的设计、施工工艺及可靠度为岩溶区地基处理技术提供应用参考。

In most cases,the bedrock surface of the karst foundation is greatly undulate,while many karst trenches,groove and caves occur in the shallow zone.These problems of karst foundation cause troubles and high costs during the construction.In light of a successful case of the treatment of the karst foundation in Guigang by a certain factory,this paper elaborated on how the small pipe piles were used to solve problems in the design,construction process and reliability of karst foundation treatment,and the results were instructive and meaningful to the future karst foundation technologies.