摘要
随着黄河清水来源区基流的减少、中下游地区耗水量的增加，使近十几年黄河下游中小洪水、高含沙洪水出现机率增加，从而导致一些迎送溜关系较好的控导工程对河势的控导作用明显削弱。小浪底水库建成后，将改变进入下游的水沙及洪水过程，中小洪水持续时间将更长，今后游荡性河道如何整治是一个非常重要的课题。本文通过模型和原型资料的对比，对已建整治工程布局中存在的问题及工程对中小水的适应性等进行了分析，同时对新形势下游荡性河段河道整治设计流量、设计河宽及新型河道整治工程状况下排洪河宽的计算等问题进行了分析和初步评议。
Due to decreasing the base flow from the clear water originating region, and increasing the water supply in the middle and lower reaches of the Yellow River, the recurrance frequencies of the middle and small floods and the hyperconcentrated floods have risen The new circumstances have apparently weakened the guiding function of the guidance works that performed well before, The duration of middle and small floods will last longer after the Xiaolangdi Reservoir impounded So, it is an important issue how to improve the wandering reach of the Lower Yellow River under the new circumstances In the paper, by comparisons of the data measured in the physical model and the prototype, the results on the layouts of the established improvement works and their adaptability to the middle and small floods, the designed flow discharge, the designed channel width in the new circumstances, and the river width for floods discharging under the control of the new types of river training works are depicted
出处
《泥沙研究》
CSCD
北大核心
1999年第4期26-31,共6页
Journal of Sediment Research
基金
国家"九五"攻关项目
关键词
河道整治
工程设计
整治流量
整治河宽
工程设计
river training
design for the works
discharge for river training
channel width for improvement
width for flood discharging
sediment transport
