高含沙模型相似律及设计实例

本文提出了既适用于低含沙水流，又适用于高含沙水流的泥沙模型相似律。阐述了进行泥沙模型设计和试验的关键技术。给出了黄河小浪底水利枢纽泥沙模型的具体设计。模型试验的结果表明，按该相似律设计的泥沙模型，可使模型中的水流条件、泥沙运动和异重流的运动规律，河床的冲淤部位、冲淤数量和淤沙粒径与原型达到基本相似。

Similarity theory and an example of sediment-hyperconcentration flow

In this paper a similarity theory is carried out, which is suitable to both sedimenthyperconcentration and sediment-lowconcentration flow. And crucial technolegy how to engage in sediment-model experiment is carried out too. According to the similarity laws,a sediment transport model is designed for Xiaolangdi Project. All model scales are given out in the paper. The results of the model experiment explain that the model designed on the basic of this similar theory is similar in the main to the prototype in all aspects such as the currents,sediment movements,the density currents,the location and quantity of scouring and deposition and the grain size of sand in the river channel.