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本模型是从水流泥沙运动的基本方程出发，对宽浅河段横断面采用剖分单元的处理办法而建立起来的。模型计算采用差分法，将不恒定流概化为恒定流求非耦合解。经用１９７５～１９８１年的实测资料进行验证，得到的模型计算的有关结果与实际符合较好。
This model is based on the basic equations of flow and sediment movement and is established by using the method of subdivision unit for the cross section of wide and shallow river. The model is calculated using the difference method, the unsteady flow is generalized to a constant flow and an uncoupled solution. The data from 1975 to 1981 were used to verify the results obtained by the model are in good agreement with the actual results.