Philip入渗公式标定计算的改进

A new method for scaling Philip's equation of infiltration

本文介绍了对Philip入渗公式的一种新的标定计算方法,并对计算结果进行了讨论。

Sixty infiltration tests were carried out with double-ring infiltrometer at a loess field 40km from Hannover. The data of each test were used to-determine sorptivity S and hydraulic conductivity A in Philip's equation I = St++At. Owing to the great variability of the parameters S and A, the infiltration data have been scaled according to the concept of similar media. A new method for determining the scaling coefficients was introduced. The semi-variograms of the scaling coefficients were used to determine their spatial dependence. The frequency distribution of the scaling coefficients in the present test was nearly log-normal. The Monte Carlo technique has been used to simulate spatial variability of the infiltration.