非淹没丁坝挑流对汊道分流的影响

Influence of Unsubmerged Dike Diverting Flow on Branch

本文通过模型试验,研究定床情况下非淹没单一正交丁坝置干汊道口门前主汊一岸对支汊分流的影响。应用水力学基本原理,探讨了在丁坝影响下支汊分流比的计算,得到(12)式,由(12)式计算的支汉分流比与实测值基本吻合。对于无丁坝时的分流进行研究,其目的是供有丁坝时进行比较,并就本模型试验条件做了一些试验和理论探讨。

The influence of the diversion ratio of main stream on branch channel in the condition of fixed bed and unsubmerged single dike constructed front of the mouth of branch channel has been studied trough model test. The calculation of branch diversion was explored in the condition with a dike, and the equation (12) was given, by using basic theory of hydraulics. The diversion ratio calculated by equation (12) is in agreement fairly with the observed data. The research of diversion discharges without dike has only been experimentally tested and theoretically explored by using the experimental conditions of this model.