基于不同断面固化方案的河道断面冲淤变化物理模型试验分析

Physical Model Test and Analysis of Scouring and Deposition Variation of River Section Based on Different Section Curing

为运用物理模型分析天然河道冲淤变化过程,探求测量断面相对稳定的水位流量关系曲线,本文通过设定不同物理模型来分析不同方案下的河道冲淤过程以及流量过程。研究结果表明:试验方案一下断面淤积较大,高水时有塌岸现象,低水时河道断面水位流量关系较为稳定;试验断面上下游设置两坎的固化方案,河道断面冲淤变化最小,水位流量关系线较为单一。研究成果对于河道断面固化方案下的断面冲淤变化和探求断面水位流量关系提供方法参考。

In order to analyze the fluctuating and siltation process of natural fiver by using the physical model, the relative stability of the measured water level and the flow curve is studied.This paper analyzes the different scouting and silting processes and the flow process under different schemes by setting different physical mod- els.The results show that the relationship between the water level and the flow velocity of the fiver section is relatively stable when the sedimentation is larger in the section and the collapse of the high water.When the water is low, the water level and the flow rate of the fiver section are relatively stable.Traffic line is relatively simple.The research results provide a reference for the relationship between the erosion and deposition of the section of the fiver section and the relationship between the water level and the flow in the section.