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Enodimenzijsko modeliranje premeščanja plavin s transportnima enačbama Engelund-Hansen in Ackers-White za spodnjo Donavo
ID Kvočka, Davor (Author)

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Abstract
Premeščanje plavin ima lahko negativne posledice za rečno okolje, saj lahko privede do poslabšanja ekološke raznolikosti in povečanja poplavne ogroženosti. Modeliranje premeščanja plavin je tako eno ključnih orodij pri upravljanju porečij in načrtovanju rečnih urejevalnih objektov. V tej študiji smo preverili primernost 1D modeliranja celotne premostitvene zmogljivosti plavin z uporabo transportnih enačb Engelund Hansen in Ackers White za območje spodnje Donave. V študiji smo ovrednotili vpliv zrnavostnega razvrščanja na natančnost 1D modelnih rezultatov, primernost 1D modeliranja premeščanja plavin v okviru inženirskih projektov in primernost enačb Engelund Hansen in Ackers White za oceno pretoka plavin na območju spodnje Donave. Modelne rezultate smo primerjali s terenskimi meritvami, pri čemer smo natančnost modelnih rezultatov ovrednotili s statističnimi testi. Dobljeni rezultati kažejo: (i) zrnavostno razvrščanje nima bistvenega vpliva na rezultate 1D modeliranja, (ii) 1D modeliranje premeščanja plavin podaja dovolj natančne rezultate za praktično inženirsko uporabo (npr. ocena obsega poglabljanja dna) in (iii) enačba Engelund Hansen je načeloma bolj primerna za modeliranje premeščanja plavin na območju spodnje Donave.

Language:Slovenian
Keywords:rečne plavine, modeliranje transporta plavin, rečna hidravlika, enačba Engelund-Hansen, enačba Ackers-White, Donava
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2021
Publication status in journal:Published
Article version:Publisher's version of article
Submitted for review:14.04.2021
Article acceptance date:11.05.2021
Publication date:21.06.2021
Number of pages:Str. 103-117
Numbering:Letn. 34, št. 61
PID:20.500.12556/RUL-127771 This link opens in a new window
UDC:004.414.23:556.536(282.243.7)
ISSN on article:1581-0267
DOI:10.15292/acta.hydro.2021.08 This link opens in a new window
COBISS.SI-ID:67850755 This link opens in a new window
Publication date in RUL:22.06.2021
Views:331
Downloads:107
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Record is a part of a journal

Title:Acta hydrotechnica
Shortened title:Acta hydrotech.
Publisher:Fakulteta za gradbeništvo in geodezijo
ISSN:1581-0267
COBISS.SI-ID:1838689 This link opens in a new window

Licences

License:CC BY-NC-SA 4.0, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-nc-sa/4.0/
Description:A Creative Commons license that bans commercial use and requires the user to release any modified works under this license.
Licensing start date:21.06.2021

Secondary language

Language:English
Title:One-dimensional sediment transport modelling with Engelund-Hansen and Ackers-White transport equations for the Lower Danube River
Abstract:
Sediment transport can have a negative impact on riparian environments, as it can lead to the deterioration of ecological diversity and increase flood risks. Sediment transport modelling is thus a key tool in river basin management and the development of river training structures. In this study, we examined the appropriateness of 1D modelling for total sediment transport loads using the Engelund Hansen and Ackers White transport equations for the Lower Danube River. The study evaluated the effect of sediment grading on the accuracy of 1D model results, the appropriateness of 1D sediment transport modelling within technical or engineering projects, and the appropriateness of the Engelund Hansen and Ackers White equations for estimating sediment yield in the area of the Lower Danube River. The model results have been compared to field measurements, with the accuracy of the modelling results being evaluated with statistical tests. The obtained results show: (i) the sediment grading does not have a significant impact on the 1D modelling results, (ii) 1D sediment transport modelling gives sufficiently accurate results for practical engineering use (e.g. the estimation of dredging activities), and (iii) the Engelund Hansen equation is generally better for sediment transport modelling in the Lower Danube River.

Keywords:river sediment, sediment transport modelling, river hydraulics, Engelund-Hansen equation, Ackers-White equation, Danube

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