黄河下游河道冲淤演变的分析

Analysis on erosion and deposition evolution of the lower Yellow River

从大量实测水文泥沙的观测资料出发,分析了黄河下游不同粒径泥沙的冲淤特性,讨论拦减粗沙及三门峡和小浪底水库修建后对下游河道冲淤的影响,给出近年来黄河下游河道冲淤的基本特性及其影响因素,提出了黄河下游减淤的一些措施,获得了一些有益的成果。

The erosion and deposition characteristics of sediment in different particle sizes are analyzed based on field data of hydrology and sediment. And the influences of trapping coarse sediment and the construction of the Sanmenxia Reservoir and the Xiaolangdi Reservoir on the erosion and deposition in the lower reaches are discussed. Basic characters of erosion and deposition in the lower reaches and its influencing factors in recent years are introduced in the paper. Measures to alleviate sedimentation are put forward, which have shown useful results.