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本文通过原型、模型实测资料分析，论述了黄河下游高含沙洪水河床演变规律及高含沙洪水在窄深河槽形成前后输水输沙特性的变化、现行河床条件下高含沙洪水造成洪水传播特性异常的原因和高含沙洪水对河道的破坏作用，意在指出小浪底水库正常运用期内要尽可能地避免出现高含沙洪水或少出现高含沙洪水。
This paper analyzes the evolution of the high sediment flood bed in the lower Yellow River and the characteristics of water transport and sediment transport before and after the formation of narrow and deep flutes in the lower Yellow River. Flooding caused by high silt flood under current riverbed conditions, The causes of abnormal characteristics and the damaging effect of high silt flood on the river are intended to point out that during the normal operation period of Xiaolangdi Reservoir, it is necessary to avoid high silt flood or less high silt flood as much as possible.