赣江尾闾多级分汊河道分流影响因素及联动响应分析

基于赣江尾闾综合整治模型,分析不同试验条件和工程措施下多级分汊河道分流特点,探讨多级分汊河道联动响应规律。试验结果表明:上游来流量、分汊口地形、洲头位置、支流进水口门地形及各支流水面比降对分汊口分流特性将产生不同程度的影响;改变影响某一分汊口分流特性的影响因素,除对该分汊口分流比有影响之外,相邻分汊口将会产生联动响应,使得相邻分汊口的分流特点发生改变。

Analysis on influencing factors of flow diversion ratio and linkage response of multistage bifurcations in the Ganjiang River

This study analyzed the influence of different test conditions and engineering measures on the distribution characteristics of multistage bifurcations based on the tail physical model of the Ganjiang River, and discussed the linkage responding law of multistage bifurcations. The results indicate that the distribution characteristics is influenced by discharge, branch mouth topography, position of the island head, entrance topography of branch and water surface slope at varying degrees. In addition, when an influence factor in a bifurcation is changed, the water diversion ratio in neighboring bifurcations will change, as well as other bifurcations, which is the linkage responding phenomenon.