A MATHEMATICAL MODEL OF RESERVOIR SEDIMENTATION  

作　　者：HUANG Jincbi1 1 China Institute of Water Resources and Hydroelectric Power Research, Fuxinglu A-1, Beijing 100038, China. E-Mail: [e-mail] 

出　　处：《International Journal of Sediment Research》2001年第2期244-250,共7页国际泥沙研究（英文版）

基　　金：the National Natural Science Foundation and the Ministry of Water Resources of China under the grant No.59890200

摘　　要：Reliable quantitative estimation of bed aggradation or degradation is important for river-training and water management projects. With the development of water resources, sediment problems associated with a dam are becoming more severe. This paper describes some special problems in mathematical model for calculation of degradation and aggradation in a reservoir. The main efforts of this study are on the treatment of some physical processes of fine sediment transport (<0.05 mm). Problems in a reservoir are obviously different from a natural stream, such as the turbid current flow, orifice sediment flushing; and the initiation and consolidation of cohesive sediment deposition. The case of Liujiaxia Reservoir, which is located in the upper reaches of the Yellow River, is employed to verify the model. The results show that the model is applicable in the evaluation of an engineering planing with plenty of fine sediment movement.Reliable quantitative estimation of bed aggradation or degradation is important for river-training and water management projects. With the development of water resources, sediment problems associated with a dam are becoming more severe. This paper describes some special problems in mathematical model for calculation of degradation and aggradation in a reservoir. The main efforts of this study are on the treatment of some physical processes of fine sediment transport (<0.05 mm). Problems in a reservoir are obviously different from a natural stream, such as the turbid current flow, orifice sediment flushing; and the initiation and consolidation of cohesive sediment deposition. The case of Liujiaxia Reservoir, which is located in the upper reaches of the Yellow River, is employed to verify the model. The results show that the model is applicable in the evaluation of an engineering planing with plenty of fine sediment movement.

关 键 词：Numerical model Density current Knickpoint movement RESERVOIR Sediment flushing 

分 类 号：TV145[水利工程—水力学及河流动力学]