不同运行水位下白鹤滩水库排沙能力初探OA

A one-dimensional mathematical model of water and sediment in Baihetan Reservoir was established to address the issue of sediment in optimized reservoir scheduling.Simulation studies were conducted on the changes in sediment discharge capacity of Baihetan Reservoir under different operating water levels.Simulation results shows that,whether it is a large or small water process,the sediment discharge capacity of Baihetan Reservoir is relatively small from July to August no matter incoming large or small water processes,the reser-voir does not have the conditions for regulating sediment discharge.However,the sediment accumulation and proportion in the fluctuating backwater area of the reservoir from July to August are relatively small,which is conducive to the optimizing the reservoir operation.During the flood season in July,when the reservoir water level is below 805 m,the sedimentation amount and proportion in the fluctuating backwater area are very small;,when the reservoir water level is above 805 m,and the sedimentation proportion in the fluctuating backwater r area gradually increases,although the sedimentation amount is still very small.During the water storage period in August,the proportion of sedimentation in the fluctuating backwater area of Baihetan Reser-voir will increase with the rise of the storage level,but the amount of sedimentation there is relatively small.The research results can provide reference for optimizing the operation of reservoirs.