基于黄河中游水库群调控的下游河道输沙能力分析.

Fully tapping the regulating potential of reservoir groups in the middle reaches of the Yellow River and improving the sediment transport capacity of the lower reaches of the Yellow River play an important guiding role on river and beach management in the lower reaches of the Yellow River. Through the analysis of measured data and mathematical models, this paper calculated the influence of combined regulation and control of existing reservoir groups under different water and sediment conditions on sediment transport capacity of the lower reaches of the Yellow River, and further to analyzed the change of sediment transport capacity of the lower reaches of the Yellow River after Guxian and Dongzhuang reservoirs come into effect. The results indicate that by optimizing the joint regulation and control mode of the existing reservoir groups, the flow process with large sediment concentration discharged by the reservoir can increase the sediment carrying capacity of the downstream river by about 10%-12%. The sediment discharge into the downstream river during the sediment retaining period after Guxian and Dongzhuang Reservoirs come into effect are reduced, and the sediment transport capacity can be further improved by 11%-12% during the normal operation period. [ABSTRACT FROM AUTHOR]