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小浪底水库的合理运用对于延长水库寿命,确保黄河下游防洪减淤、长治久安,至关重要。本文基于与小浪底水库河谷地貌、水沙运动基本相似的三门峡水库潼关以下库段和下游河道数十年的基本资料,分析了水库造床及冲淤形态、水库拦粗排细和水库泄空、溯源冲刷的特点,以及溯源冲刷本身对黄河下游河道冲淤的影响。这些对于深化认识和科学制定小浪底水库拦沙后期的运用方式是非常重要的。
The rational use of Xiaolangdi Reservoir is essential to prolong reservoir life and ensure flood control and siltation reduction and long-term peace and security in the lower reaches of the Yellow River. Based on the basic data of the reservoir sections below Tongguan and the channels of the lower reaches of the Sanmenxia Reservoir which are basically similar to the valley landform and water and sediment movement in the Xiaolangdi Reservoir, this paper analyzes the characteristics of reservoir formation and scouring and silting patterns, The characteristics of traceability and scouring, as well as the impact of scouring itself on the scouring and silting of the lower Yellow River. These are very important for deepening our understanding and scientifically formulating the application of Xiaolangdi Reservoir sedimentage later in life.