漫湾水库拦沙对大朝山水库淤积的影响研究

Influence of sediment retaining in Manwan reservoir on sedimentation in Dachaoshan reservoir

水库泥沙淤积预测是水库调度运行的重点和难点之一,需要用合理的预测模型,大量的实测数据资料,才能进行准确的水库淤积预测。利用韩其为[1]水流挟沙力公式以及戛旧站多年径流、泥沙资料,进行了漫湾水库的拦沙预测分析。对漫湾大坝下游宽级配基岩河床冲刷作了阐述。进行了上游有无漫湾水库蓄水拦沙时,大朝山水库淤积分析计算。分析结果表明,漫湾水库对大朝山水库的拦沙作用是十分明显的。

Reservoir sedimentation prediction is one of the key and difficult points in reservoir regulation and operation,and reasonable prediction model,large amount measured data are required for accurate prediction.Using flow sediment laden formula set by Hanqiwei and overyear runoff,sediment data,the sediment retaining prediction of Manwan reservoir is carried out.The scouring of downstream foundation rock river bed is presented.The sedimentation in Dachaoshan reservoir is computed under the 2 conditions,sediment retained by Manwan reservoir and without Manwan reservoir.The computation result demonstrates that the influence of Manwan reservoir on sedimentation of Dachaoshan reservoir is very obvious.