中文摘要：

以非饱和土壤水分运动理论为基础,研究垂直一维入渗土壤水分运动的数学模型,对不同初始含水率条件下多种典型土壤垂直一维入渗特性进行模拟,结果表明：土壤累积入渗量变化过程符合Philip模型,提出了包括初始含水率、饱和含水率和饱和导水率的Philip模型参数的确定方法.利用已有文献资料对所建模型进行验证,结果表明：所建模型能较简单地确定吸渗率和稳渗率,可以较准确地反映土壤水分垂直一维入渗特点.

英文摘要：

Based on unsaturated soil water movement theory,the mathematical model of one-dimensional vertical infiltration was investigated and the simulation of infiltration characteristics of various typical soils with different initial water content was performed.The result showed that the variation of cumulative infiltration would be consistent with the Philip model.A determination method of Philip model parameters such as initial water content,saturated water content and saturated hydraulic conductivity was presented.The model was verified by the data in the literatures available.It was shown that the established model was able to determine readily the soil absorptivity and steady infiltration rate,reflecting more accurately the characteristics of one-dimensional vertical infiltration.