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从三门峡水库蓄清排浑运用以来对澶关河床高程及下游河道的冲淤影响分析中表明,水库汛期泄量是控制潼关河床高程的主要条件,当泄量达到天然河道的造床流量时,潼关河床高程才能维持稳定,否则,将自动调整,以适应于来水来沙条件与水库泄流规模的关系。水库进行调水调沙运用,加大水库的排沙流量,可以增加下游河道的平滩流量和输沙能力,减轻下游河道淤积,因而在多沙河流上修建水库,需要一定的泄流规模和调沙库容,合理调节水沙,才可以维持水库长期使用。
From the Sanmenxia reservoir storage and discharge of muddy sediment since the river bed and the impact of the scouring and silting downstream river shows that the reservoir flood season discharge is to control the elevation of the main water level Tongguan bed, when the discharge reaches the natural river bed flow, Tongguan bed elevation to maintain stability, otherwise, will be automatically adjusted to meet the water and sand conditions and the relationship between the size of the reservoir discharge. Reservoir water and sediment adjustment, increase sediment discharge from reservoirs can increase the downstream channel beach flow and sediment transport capacity, reduce the downstream river siltation, and thus build a reservoir on the Dousha River flow, the need for a certain amount of drainage and Adjust the sand storage capacity, reasonable regulation of water and sediment, can maintain the long-term use of the reservoir.