The solidified sludge of Donghu can’t be directly used for subgrade. In this paper,cement was adopted to modify it. Tests of hydrau-lic characteristics of the modified solidified sludge was conducted to get the soil water characteristic curve and hydraulic conductivity function. The Richards equation was used as a control equation in the theory of transient flow. Numerical simulation was conducted to find the effects of different external environment on moisture migration in the subgrade.%东湖固化淤泥土不能直接用于路基填筑，因此使用水泥对其进行改性，形成了改性固化淤泥，通过对改性固化淤泥的水力特性试验，获得了其土水特征曲线和水力传导函数曲线，在此基础上，使用Richards方程作为控制方程的瞬态流理论进行了东湖改性固化淤泥路基在不同外部环境作用下水分迁移的数值模拟分析，得出了一些有意义的结论。
展开▼
