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在分析降水头入渗过程的基础上,应用Green-Ampt入渗模型,并假定降水头垂直一维入渗也适用于Philip入渗模型的前提下,通过二模型参数间的转换关系建立了适用于降水头垂直一维入渗的累积入渗量的显式函数,并利用3种不同土壤进行了检验。结果表明,降水头垂直一维入渗的累积入渗量可适用于Philip入渗模型,所建立的降水头垂直一维累积入渗量显函数的整体相对误差分别为1.89%、0.02%、0.10%;均方根误差分别为0.13、0.07、0.08,模型的模拟精度较高,能有效地模拟连续降水头条件下的入渗过程。
Based on the analysis of the infiltration process of the rainfall head and the Green-Ampt infiltration model, and assuming that the vertical one-dimensional infiltration of the rainfall head is also suitable for the Philip infiltration model, the conversion relation between the two model parameters is established An explicit function of cumulative infiltration into vertical one-dimensional infiltration at the head of the rains was tested using three different soils. The results show that the cumulative infiltration of vertical one-dimensional infiltration can be applied to the Philip infiltration model, and the overall relative errors of the vertical cumulative one-dimensional cumulative infiltration of the precipitation head are 1.89%, 0.02%, 0.10 %, Respectively. The root mean square errors are 0.13, 0.07 and 0.08, respectively. The simulation accuracy of the model is high, which can effectively simulate the infiltration process under continuous rainfall head conditions.