Naslov
Planed Hydrotechnical Research in Rijeka Area in Croatian-Japanese Project

Autori
Ožanić, Nevenka ; Ružić, Igor ; Sušanj, Ivana ; Žic, Elvis

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

Izvornik
Book of extended abstract of 1st Project Workshop: Risk identification and Land-Use Planning for Disaster Mitigation of Landslides and Floods in Croatia – International experience / Arbanas, Željko ; Mihalić, Snježana ; Marui, Hideaki - Dubrovnik : Sveučilište u Zagrebu, 2012

ISBN
978-953-6953-28-8

Skup
1st PROJECT WORKSHOP - International experience

Mjesto i datum
Dubrovnik, Hrvatska, 22.11.2010. - 24.11.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Croatian-Japanese Project; Rječina valley; Grohovo landslide; Vinodol Valley; Dubračina river

Sažetak
Planed hydrotechnical research locations in Croatian-Japanese project - RISK IDENTIFICATION AND LANDUSE PLANNING FOR DISASTER MITIGATION OF LANDSLIDES AND FLOODS IN CROATIA in Rijeka area are Grahovo Rječina and Dubračina river - Salt creek catchment area. Grohovo landslide on the north-eastern slope of the Rječina valley is the largest active landslide along the Croatian part of the Adriatic Sea coast. This complex retrogressive landslide was reactivated in December 1996. Thirteen separate slide bodies have been identified. The slide surface is considered to be on the upper flysch bedrock surface. Monitoring indicated the magnitude of displacements was very different in time and space. The maximum movements were recorded on the upper part of the slope. The limestone mega-block and separated rocky blocks on top of the slo pe have also moved, which is not typical phenomenon of the flysch slopes in the area of Rijeka. In case of a landslide appearance into the Rječina river bed (canyon) during flood appearance, we planned to make modeling (simulation) of propagation of flood water waves, soil material and water movements through the canyon all the way to the city of Rijeka, including possible scenarios and consequences would be performed. Dubračina is the main watercourse by which the waters of the central part of Vinodol valley are discharged and flow into the sea in Crikvenica. The catchment area is of exceptional natural and cultural value and the large part of the catchment area covers the area comprised in the Regional Development Plan of Special Characteristics in Vinodol Valley. The analyzed part of Dubračina river catchment area is situated in the central part of Vinodol valley which is a separate geographical entirety of the eastern Kvarner region. Geographically speaking, Vinodol is a unique spatial entirety situated between Križišće in the north-west and Novi Vinodolski in the south-east and the littoral alongside the Vinodol channel. The Dubračina watercourse is by its immediate catchment area surface and water balance the largest and the most important watercourse of Vinodol valley. From the hydrological point of view, the hydro-power system of Vinodol valley with its maximum capacity of 16.7 m3/s has a significant influence on the watercourse itself. This system comprises the Gorski kotar watercourses Ličanka, Lokvarka, Križ potok, Potkoš, Benkovac i Potok pod grobljem. The total surface of the catchment area is about 80.8 km2 and the entire surface is situated at about 700 m a.s.l. The annual mean precipitation rate at this area is from 1420 to 3950 mm, which results in an annual mean flow of 4.21 m3/s. The power potential of those watercourses is primarily used in hydropower plant Vinodol situated in Vinodol valley at 56.5 m a.s.l. We began to measure and collect hydrological data from January 2010, make some hydrological analysis, and we plan to continue with new equipment and new methods.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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