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dc.contributor.authorZhang, Yaoxinen_US
dc.contributor.authorJia, Yafeien_US
dc.contributor.authorYeh, Keh-Chiaen_US
dc.contributor.authorLiao, Chung-Taen_US
dc.contributor.authorWang, Sam S. Y.en_US
dc.date.accessioned2017-04-21T06:48:48Z-
dc.date.available2017-04-21T06:48:48Z-
dc.date.issued2015en_US
dc.identifier.isbn978-0-7844-7916-2en_US
dc.identifier.urihttp://hdl.handle.net/11536/134699-
dc.description.abstractThis paper presents a study of soft rock erosion in Chuoshui Creek, Taiwan, using CCHE3D hydrodynamic model. The geological condition of Chuoshui Creek is complex; one reach of the river is flowing through a zone of base rock which is highly weathered and erodible, resulting in tremendous channel incision and headcut propagation particularly by high floods during typhoon seasons. A semi-empirical soft-rock erosion mechanism is implemented, in which the softrock properties, flow shear stress, and stream power, etc. are considered. The erosion rate coefficients of the formulation have been calibrated by field data in separate studies. In this study, the event of typhoon Morakot in 2012 was utilized to simulate the softrock erosion process in a 1.6km-long reach downstream of a large cross-river infrastructure, JiJi Weir, where serious soft rock erosion has occurred, threatening the integrity of the weir. The 3D model performed well under the conditions of highly unsteady, supercritical flows and complex channel topography. Comparing to the field data, the simulation results agreed well with the observations. The calibrated CCHE3D softrock model is then applied for evaluating the effectiveness of planned erosion control structures in the river.en_US
dc.language.isoen_USen_US
dc.title3D Simulation of Softrock Erosion in Chuoshui Creeken_US
dc.typeProceedings Paperen_US
dc.identifier.journalWorld Environmental and Water Resources Congress 2015: Floods, Droughts, and Ecosystemsen_US
dc.citation.spage1713en_US
dc.citation.epage1723en_US
dc.contributor.department防災與水環境研究中心zh_TW
dc.contributor.departmentDisaster Prevention and Water Environment Research Centeren_US
dc.identifier.wosnumberWOS:000392856300167en_US
dc.citation.woscount0en_US
Appears in Collections:Conferences Paper