Numerical simulation of sediment transport and morphological change of JiJi weir reservoir

Yaoxin Zhang*, Yafei Jia, Keh Chia Yeh, Chung Ta Liao, Sam S Y Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

JiJi Weir was built across a mountain river, Chuoshui Creek, Taiwan. Because of deep slope, abundant sediment supply and tropical Typhoon climate, channel changes are very fast and occur in Typhoon seasons. Since its normal operation in 2002, the shallow reservoir of the JiJi Weir had a serious sediment problem: it could be filled up in just one strong typhoon event. Sediment will be completely carried through the reservoir and the spillway of the Weir. In this paper, a computational model, CCHE2D, was used to simulate the sediment transport of the JiJi Weir Reservoir. Transport of both suspended load and bedload sediments with multiple grain-sizes was simulated, and the geomorphology changes were studied within the reservoir during nine typhoon events. Simulation results were compared with the measurements of morphological change, and it shows that the CCHE2D model is capable of producing reasonable and realistic morphological changes.

Original languageEnglish
Title of host publicationProceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009
Subtitle of host publicationGreat Rivers
Pages3517-3528
Number of pages12
DOIs
StatePublished - 26 Oct 2009
EventWorld Environmental and Water Resources Congress 2009: Great Rivers - Kansas City, MO, United States
Duration: 17 May 200921 May 2009

Publication series

NameProceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers
Volume342

Conference

ConferenceWorld Environmental and Water Resources Congress 2009: Great Rivers
CountryUnited States
CityKansas City, MO
Period17/05/0921/05/09

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