关键词: 就地固化技术, 浅层处理, 堆填土, 强力搅拌法, 硬壳层

Abstract: The newly formed land site has the characteristics of various degrees of compaction, uncompleted settlement under the self-weight and loose soil structure. This type of soils may cause some engineering hazards, such as a low bearing capacity, poor drivability of construction equipment on the land, out of alignment of newly installed pile head in this soil. In response to those issues, this paper presents a case history of the electronic information industrial park project near the Zhuhai west railway station. The design and construction method of the shallow improvement of the newly filled soil by in-situ solidification of forced mixing method is introduced. The construction process and the effect of the solidification soil are also analyzed. The results show that the bearing capacity of the in-situ solidification soil is significantly improved, the superficial hard crust by the in-situ improvement is formed quickly to accommodate construction equipment and solve the problem of the misaligned of pile head. 

Key words: In-situ Solidification Technology, Shallow Treatment, Fill Soil, Forced Mixing Method, Superficial Hard Crust