5. PREDICTION MODEL OF WATER INFILTRATION DEPTH
Under the assumption of saturated-unsaturated stratification in the process of loess infiltration, a modified Green-Ampt (MGAM) model (Wen et al., 2020) was established to calculate the water infiltration depth in the loess area at different points in time (Fig. 12).
[Insert Figure 12]
According to the MGAM model, during the infiltration process, the cumulative infiltration I can be expressed as: