摘要
The training effectiveness of the lower Yellow River(LYR)depends on the understanding of the regularity offlow-sediment transport and riverbed sedimentation.The measured data of dailyflow discharge and sediment transport rate at thefive hydrological stations(Xiaolangdi[Xld],Huayuankou[Hyk],Gaocun[Gc],Aishan[As],and Lijin[Lj])in the LYR during the period from 1960 to 2017 are used to investigate the regularity offlow-sediment transport and sedimentation in the LYR.The Xld station is used as the inlet control station,and the LYR is divided into four segments using four other stations,and the whole year is divided into three periods,namely,the dry season,theflood period,and the nonflood period of the wet season.On this basis,the relationships between the sediment transport rates at the four stations(Hyk,Gc,As,and Lj)and the rates at their respective closest upstream stations are analyzed in each of the three periods.According to the incoming sediment coefficient of the Xld station,theflow and sediment processes in the three periods are classified,and the refined equations for the relationship between the sediment transport rates at the downstream station and its upstream station are established.The results show that the calculated amount and process of erosion and deposition in each period and each segment of the LYR using the equations are in good agreement with the measured values.The relationship equations established in this study can conveniently predict the amount of erosion and deposition in different periods and different segments of the LYR in the future,which is of great significance to the rapid decision of the impact of the construction and operation of hydraulic projects in the upper and middle reaches of the Yellow River on the sedimentation in the LYR.
出处
《River》
2024年第3期245-259,共15页
江河(英文)
基金
Open Research Fund of state key Laboratory of simulation and Regulation of Water Cycle in River Basin(China lnstitute of Water Resources and Hydropower Research),Grant/Award Number:IWHR-SKL-202104
National Natural Science Foundation of China,Grant/Award Number:U2243237
Outstanding Youth scientific research project of Yellow River Conservancy Commission of the Ministry of Water Resources,Grant/Award Number:HQK-202302。
