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Application of numerical model in evaluating the effects of a planned reservoir on reach-scale bankfull discharge of the lower Wei River
He Li
2018-05-01
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume15Issue:5Pages:1057-1070
Corresponding AuthorHe Li(heli@igsnrr.ac.cn)
AbstractPredicting the responses of an alluvial channel to changes in flow and sediment supply is essential for engineering design. Many methods have been developed in the last few decades to describe sectional bankfull characteristics (elevation and discharge); however, studies on long-term reach-scale bankfull discharge are still limited. In this study, a hydraulic model is built to calculate the reach-scale bankfull discharge, and the effects of reservoir building on downstream bankfull discharges are discussed. The studied river reach is located at the lower Wei River (WR), where the planned Dongzhuang Reservoir would be built on its largest tributary, the Jing River. A quasi-two-dimensional numerical model coupled with a bankfull discharge estimating method is put forward to calculate the reach-scale bankfull discharge. The soundness of the model is verified. Results show that the temporal variation of reach-scale bankfull discharge of the lower reach of the WR would be highly influenced by the planned reservoir, especially during the first 20 years of operation. The effect of the planned reservoir on bankfull discharge may reach its maximum when the total trapped sediment load reaches approximately 75% of the reservoir capacity. Our results show that after the first 17 years of operation, the effect of the planned reservoir on bankfull discharge of the river reach may decrease gradually. The soundness and predictive capability of the coupled model have also been calibrated by comparing with existing reservoirs. All analyses indicate that the numerical model can be used to predict the changed reach-scale bankfull discharge of the lower WR.
KeywordWei River Bankfull discharge Reservoir Numerical model Flow change Sediment supply
DOI10.1007/s11629-017-4657-8
WOS KeywordYELLOW-RIVER ; FLOW
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[2011CB403305] ; National Natural Science Foundation of China[51579230] ; National Natural Science Foundation of China[51109198] ; National Natural Science Foundation of China[41571005] ; National Natural Science Foundation of China[51479179]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000431989800011
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54877
Collection中国科学院地理科学与资源研究所
Corresponding AuthorHe Li
AffiliationChinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Land Surface Proc, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
He Li. Application of numerical model in evaluating the effects of a planned reservoir on reach-scale bankfull discharge of the lower Wei River[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(5):1057-1070.
APA He Li.(2018).Application of numerical model in evaluating the effects of a planned reservoir on reach-scale bankfull discharge of the lower Wei River.JOURNAL OF MOUNTAIN SCIENCE,15(5),1057-1070.
MLA He Li."Application of numerical model in evaluating the effects of a planned reservoir on reach-scale bankfull discharge of the lower Wei River".JOURNAL OF MOUNTAIN SCIENCE 15.5(2018):1057-1070.
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