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在陕西、山西等省的广大平原地区,由于地下水(主要是潜水和上层滞水)的大幅度上升,原来的湿陷性黄土有相当一部分已转变为饱和黄土。与此同时其强度降低、压缩性增加,具有较高的灵敏度。本文称这层饱和黄土为“浅层饱和黄土”。一、浅层饱和黄土的某些性质湿陷性黄土饱水之后,土体内仍保留着一定数量的大孔隙,孔隙比e偏高,含水量W接近或超过液限W_L。按土的液性指数I_L
In the vast plains of Shaanxi, Shanxi and other provinces, due to the substantial increase in groundwater (mainly submersible and upper-water stagnant), a considerable part of the original collapsible loess has turned into saturated loess. At the same time, its strength is reduced, its compressibility is increased, and its sensitivity is high. This article refers to this layer of saturated loess as “smooth saturated loess.” 1. Some properties of shallow saturated loess After the collapsible loess is saturated with water, a certain amount of macropores remains in the soil, the porosity ratio e is higher, and the water content W approaches or exceeds the liquid limit W_L. According to the soil fluid index I_L