Impact of the rainfall duration and temporal rainfall distribution defined using the Huff curves on the hydraulic flood modelling results

Bezak, Nejc (avtor), Šraj, Mojca (avtor), Rusjan, Simon (avtor), Mikoš, Matjaž (avtor)

In the case of ungauged catchments, different procedures can be used to derive the design hydrograph and design peak discharge, which are crucial input data for the design of different hydrotechnical engineering structures, or the production of flood hazard maps. One of the possible approaches involves using a hydrological model where one can calculate the design hydrograph through the design of a rainfall event. This study investigates the impact of the design rainfall on the combined one-dimensional/two-dimensional (1D/2D) hydraulic modelling results. The Glinščica Stream catchment located in Slovenia (central Europe) is used as a case study. Ten different design rainfall events were compared for 10 and 100-year return periods, where we used Huff curves for the design rainfall event definition. The results indicate that the selection of the design rainfall event should be regarded as an important step, since the hydraulic modelling results for different scenarios differ significantly. In the presented experimental case study, the maximum flooded area extent was twice as large as the minimum one, and the maximum water velocity over flooded areas was more than 10 times larger than the minimum one. This can lead to the production of very different flood hazard maps, and consequently planning very different flood protection schemes.

• Jezik: Angleški jezik
• Ključne besede: design storm, hydraulic modelling, flood hazards, Glinščica catchment, hydrological modelling, Huff curves, HEC-RAS
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2018
• Št. strani: 15 str.
• Številčenje: Vol. 8, iss. 2, art. 69
• PID: 20.500.12556/RUL-131866
• UDK: 556.12(045)
• ISSN pri članku: 2076-3263
• DOI: 10.3390/geosciences8020069
• COBISS.SI-ID: 8314209
• Datum objave v RUL: 05.10.2021

Gradivo je del revije

• Naslov: Geosciences
• Skrajšan naslov: Geosciences
• Založnik: MDPI
• ISSN: 2076-3263
• COBISS.SI-ID: 519967769

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 11.02.2018

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: projektni padavinski dogodek, hidravlično modeliranje, poplavna ogroženost, porečje Glinščice, hidrološko modeliranje, Huffove krivulje, HEC-RAS

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: J2-7322
• Naslov: Modeliranje hidrološkega odziva nehomogenih povodij

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0180
• Naslov: Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij