灞河橡胶坝库区一维非恒定流数学模型的构建与应用

Establishment of Mathematical Model of One-dimensional Unsteady Flow for the Reservoir of Bahe River Rubber Dam

阐述了一维非恒定流水沙数学模型构建的基本原理,并应用圣维南方程以及非恒定泥沙连续方程建立灞河橡胶坝库区一维非恒定流数学模型,进而利用该模型对灞河橡胶坝库区的河床演变进行了模拟计算。结果表明:灞河B#橡胶坝库区的模拟计算结果与物理模型试验结果符合良好;且在计算库区各时段河底高程变化中具有较好的精度。

This paper expounded the basic principle of establishing one-dimensional unsteady flow mathematical model of water and sediment.Based on Saint-Venant equation and unsteady sediment equation it established one-dimension unsteady flow math-model for the Bahe River rubber dam and carried out the simulating calculation for the river bed evolution.The results showed that the simulating result by the mathematical model was good coincidonce with the physical model experiment of B# Ba River rubber dam.