吹泥造陆场地结合地下空间开发的地基处理方案

针对围海造地的吹泥场地基坑建设成本高、施工难度大的问题,通过台州东部新区启动吹填造陆场地基处理以及基坑工程的案例,分析吹泥场地地质条件、浅层和中厚层不同真空预压处理方案的加固效果及其对基坑支护的影响,进行基坑的稳定和总体造价分析,认为采用中厚层真空预压处理工艺,有利于基坑工程的支护和开挖,可减少工程总投资。因此,在围海造地期间改变传统造地观念,地基处理结合地下空间规划,从后续开发建设和工程整体性的角度考虑是有必要的。

Ground treatment scheme of blowing mud ground combined with development of underground space

The foundation engineering construction of a blast-filled ground is characterized by high cost and difficulty of building construction.According to the foundation treatment and foundation pit engineering tests of the start-up area of the eastern part of Taizhou new district,the geological condition of a blast-filled ground and different vacuum preloading treatment schemes of the shallow and medium-thick fill of dredged silt foundation are considered.In addition,analysis of stability and total cost of foundation pit indicates that not only the vacuum preloading treatment scheme of the medium-thick fill is conducive to the support and excavation of foundation pit,but also the total investment in the project is greatly reduced.The conclusion shows that it is necessary to combine foundation treatment with the planning of underground space from the point of view of the follow-up construction and the integrity of engineering.