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泥沙的沉积会改变土壤表面特性、影响土壤的入渗特性。但目前对此问题仅是通过实验研究，未形成具有物理机制的计算土壤入渗过程的模型，不利于根据现代土壤物理方法描述浑水入渗过程。该文通过对浑水入渗特性和浑水入渗规律的分析，对现有的Ｇｒｅｅｎ－Ａｍｐｔ入渗模式进行改进，将泥沙沉积对入渗的影响归结为对湿润锋平均吸力的影响。这样有利于利用现有清水入渗模式来计算浑水入渗过程。并且利用室内模拟实验资料对模型进行检验，检验结果表明该模型是合理的。
Sediment sedimentation can change the surface characteristics of the soil, affecting soil infiltration characteristics. But at present, this problem is only through experimental research, and no model of calculating soil infiltration process with physical mechanism is formed, which is not conducive to describing muddy water infiltration process based on modern soil physical methods. Based on the analysis of infiltration characteristics of muddy water and infiltration rules of muddy water, the existing Green-Ampt infiltration model is improved. The influence of sediment deposition on infiltration is summarized as the influence on the average suction of wetting front. This will facilitate the use of existing water infiltration model to calculate the muddy water infiltration process. And the model is tested by indoor simulation experiment data, the test results show that the model is reasonable.