清江水布垭水利枢纽库区泥沙淤积计算分析

 清江水布垭枢纽建成蓄水运用以后，将拦截坝址以上大部分悬移质泥沙及全部推移质泥沙，因此，库区将发生淤积。对清江水布垭枢纽推荐方案(400m～391.8m～350m)进行库区泥沙一维水沙数学模型淤积计算分析。计算成果表明，悬移质泥沙主要淤积在死库容内，对有效库容影响不大；水库运行至20年末遇频率5%及20%的洪水，泥沙淤积对洪水位的影响不明显。

Application of Scientific Research on Shuibuya Project

After completion and operation of the Shuibuya Project on the Qing jiang River ,most suspended load and entire bed load upstream of the dam will be retained and sediment deposition will occur in the reservoir area consequently .Calculation and analysis of reservoir sedimentation for the reservoir are carried out under the proposed scheme of operation(400m,391m,350m scheme )by means of 1 D flow and wdeiment mathematical model .The results show that the deposition of the suspended load mainly occurs in the dead storage and has little effect on the effective storage;the sediment deposition has no obvious effect on flood stage when 5% and 20% probability floods occurs at the end of 20 year operation of the Reservoir.