黄河下游游荡性河道双岸整治方案研究

作者针对黄河下游游荡性河槽极为宽浅，河床极不稳定，目前的河道整治宽度过大，不利于洪水期控导河势与河床的集中冲刷，必须双岸同时整治，缩窄河宽；从有利于排洪输沙需求出发，应按洪水较顺直河势，因地制宜，因势利导的原则规划流路。两岸同时整治后，在小浪底水库下泄清水冲刷期，可控制滩地坍塌、河槽展宽，使冲刷向纵深方向发展，有利于使河槽过流能力迅速增大。为水库泥沙多年调节排沙期利用洪水集中排沙入海创造条件，使近期作用与远期整治效果紧密结合。形成窄深、归顺 、稳定、且有窄槽宽滩的输水输沙通道。

Study on river bank training in the wandering lower Yellow River

The authors studied the bank training of the wandering channel of the lower Yellow River, which is very wide, shallow and unstable. The present river channel is too large for river training. It is suggested to train the river channel on both banks to meet the requirement for flood discharge and sediment transport. The river pattern of a straight flood path is to be selected according to local conditions. By means of training the wandering river on both banks, the riverbed will be scoured by clear water released from the Xiaolangdi Reservoir. A narrow, deep, straight and stable path with a narrow channel and wide beach would be developed and the discharge capacity of the channel will be enlarged for both floodwater and sediment. This paper discussed in detail the reasonability and feasibility of river training on both banks in terms of techniques. Study was also made on selecting the channel width and the arrangement of counterpart spurs on both banks.