Naslov
The Flood Risk Analysis of Areas Defended by Retention System

Autori
Novak, Kristina ; Kuspilić, Neven ; Kunštek, Duška

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
10th International Symposium on Water Management and Hydraulic Engineering : Book of Abstracts & Proceedings on CD / Petraš, Josip - Zagreb : Građevinski fakultet Sveučilišta u Zagrebu, 2007, 151-151

ISBN
978-953-6272-22-8

Skup
International Symposium on Water Management and Hydraulic Engineering (10 ; 2007)

Mjesto i datum
Šibenik, Hrvatska, 04.09.2007. - 09.09.2007

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
HEC - HMS; retention; runoff; water wave; risk

Sažetak
Retentions are often used as technical measures for protection from flash floods. They are either used as independent structures or a multi structured system. The more complex the system, the more complicated is the identification of relevant precipitations providing a critical discharge on the downstream area, mostly directed towards determination of flood risks. One of the key elements is the correctly developed simulation model giving precise forecast of oncoming water wave. The paper reports on the risk determination method associated with rainfall probability. For an analysis the example of the complex Medveščak brook catchement was taken, as a part of Medvednica hill’ s water drainage system for protection of the city of Zagreb from floods. The simulation of oncoming water wave was conducted with hydraulic and hydrologic model, using HEC ("Hydrologic Engineering Centre") of the programme package, developed by the US Army Corps of Engineers hydraulic engineering centre. The model examines directly the output results’ sensitivity (transformation of water waves of different return periods) to the set of hydraulic catchement parameters (various precipitation cases with corresponding return periods and intensities - ITP curves). The maximal discharge, return period and rain period dependence diagrams were created to estimate flood risks: Qmaks – PP - Tk for characteristic catchement points. For these points, with regard to the bed capacity a water wave return period that does not overflow the bed was determined. The obtained results of the simulation model indicate that a satisfyingly constructed retention system provides a highquality flood protection for the observed area of Medveščak.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Računarstvo, Informacijske i komunikacijske znanosti

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