河道平面二维泥沙数学模型研究与验证

本文所建立的河道平面二维非均匀不饱和悬移质输移数学模型及计算模式,侧重于模拟长系列水沙过程中的河床变形。该模型实现了从基本资料输入到成果整理及绘图由计算机自动处理,并用汉江丹江口水库油房沟河段1977～1990年的资料,对模型进行了全面验证,在河段冲淤过程、冲淤量及冲淤分布、断面形态等方面符合较好。

A Planar (2-D) Mathematical Model of Sedimentation in River Channel

The planar (2-D) mathematical model of non-equilibrium transport of nonuniform suspended load in river channel, established in this paper, is placed emphasis on simulation of river bed deformation process of longterm series water-sand data. In the model test automatic dealing process in computer from input of the basic date to output and plot of the results is realized. Thorough verification of the model is done with 1977-1990 series date of Youfanggou river reach in Danjiangkou reservoir on Hanjiang river, results of computation are very satisfied in aspects of amount of sediment, distribution and process of bed deposition or erosion, and configuration of cross sections etc.