软土一般是指在静水或缓慢流水环境中以细颗粒为主的近代沉积物。其天然含水量大,压缩性高、承载力低、渗透性小,是一种呈软塑状态的饱和粘性土。软土地基是一种不良地基,在软土地基上修建建筑物,往往会出现地基强度和变形不能满足设计要求的问题,因此,在建筑基础施工必须重视地基的变形和稳定性。作为处理软土地基手段之一的深层粉体搅拌桩,在我国土建工程中已得到广泛使用。 Soft soil generally refers to the modern sediment that is dominated by fine particles in still water or slow flowing water environment. Its natural water content, high compressibility, low carrying capacity, low permeability, is a state of soft clay saturated clay. Soft soil foundation is a kind of unfavorable foundation. When building a building on soft soil foundation, the strength and deformation of the foundation often can not meet the design requirements. Therefore, the deformation and stability of foundation must be emphasized in the construction of foundation. As one of the means to deal with the soft ground deep powder mixing pile, civil engineering in our country has been widely used.