基于运动波下渗的产流模型研究与应用

Study and Application of A Runoff Generation Model Based on Kinematic Infiltration Model

阐述了基于运动波下渗的产流模型的基本原理,并在长江三峡地区沿渡河流域进行了初步应用,结果良好。该模型从描述流域各点土壤水分剖面的变化过程出发,给出流域下渗能力和饱和面积的时空分布,从而得到超渗径流和蓄满径流成分在流域上的时空分布,在物理概念合理的框架之下实现了超渗和蓄满产流机制的综合模拟。

The distributed runoff model based on kinematic infiltration is introduced and applied in Yanduhe catchment of Three georges zone. The model gives temporal-spatial distribution of infihraion capacity and saturated area in catchments based on evolution processes of soil moisture profile, and then runoff infiltration excess and saturated excess runoff are obtained over the whole catchment. It combines ＂Hortonian＂ and ＂Dunne＂ runoff mechanics with the right physical concept in a model.