Analysis of flood characteristics in the Baihetan Reservoir
Based on the measured water and sediment data in the Baihetan Reservoir from 2015 to 2022,the flood processes were divided,and the characteristics of the flood and sediment transport during flood seasons before and after the operation of Baihetan Reservoir have been analyzed.The results show that the sediment in Baihetan Reservoir concentrates in flood seasons,and the sediment transported by the main stream flood reduces significantly due to the influence of the upstream reservoir.The peak discharge entering and exiting the reservoir is mainly of 7 500～12 500 m3/s,and the sediment transport volume in this flow rate level accounts for more than 58％.The relationship curves of sediment concentration andflow rate are mainly clockwise,which means the sediment peak get ahead the flood peak during floods entering and exiting the reservoir.Before the operation of the Wudongde Reservoir and Baihetan Reservoir,the flood peak and sediment peak are higher in flood season,and the incoming sediment concentration is generally higher than that exiting the reservoir with the sediment replenishment along the reservoir area.After the operation of Wudongde and Baihetan reservoirs,the flood peak and sediment peak decrease and the sediment peak get flattening obviously.
Baihetan Reservoirflood eventincoming flow and sedimentflood and sediment peaks
万方数据
维普
