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对三门峡建库前后44年下游河道的冲淤变化特征作了全面系统地分析研究。黄河下游河道逐年淤高，原因是来水少、来沙多，超过河床输沙能力所致，下游河床只适应于平均含沙量50kg／m3左右的洪水。本研究可为下游防洪、河道整治以及小浪底水库运用方式提供科学依据。
The characteristics of erosion and deposition of the downstream reaches of the 44-year period before and after the Sanmenxia Reservoir were comprehensively and systematically analyzed. The reason why the lower reaches of the Yellow River is silting up each year is due to less incoming water, more sand coming over and more capacity of sediment transport over the riverbed. The lower reaches of the riverbed are only adapted to floods with an average sediment concentration of about 50kg / m3. This study can provide a scientific basis for flood control, river regulation and the application of Xiaolangdi Reservoir.