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利用土壤冻融过程的水热传输方程，模拟了饱和土壤冻融的年变化过程，分析了土壤冻结深度的年变化规律和水分向冻结界面迁移的特征。同时亦对影响土壤冻结深度的温度因子做了探讨。
The annual variation process of saturated soil freezing and thawing was simulated by using the heat and water transfer equation of soil freezing and thawing process. The annual variations of soil freezing depth and the characteristics of water migration to freezing interface were analyzed. At the same time, the temperature factors affecting soil freezing depth are also discussed.