Naslov
Analysis of sliding hazard in wider area of Brus landslide

Autori
Mihalić, Snježana ; Arbanas, Željko ; Krkač, Martin ; Dugonjić, Sanja

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

Izvornik
Proc. of the XV European Conference on Soil Mechanics and Geotechnical Engineering / Anagnostopoulos, A. ; Pachakis, M. ; Tsatsanifos, Ch - Amsterdam : IOS Press, 2011, 1377-1382

ISBN
1607508001

Skup
XV European Conference on Soil Mechanics and Geotechnical Engineering

Mjesto i datum
Atena, Grčka, 12.09.2011. - 15.09.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Istrian flysch deposits; translational block sliding; GIS; spatial analysis; landslide susceptibility map

Sažetak
The middle and northern part of the Istrian Peninsula, placed in the north-western part of the Croatian Adriatic coast, are com-posed of Paleogene flysch rock complex. Flysch zone in the northeast part of peninsula is placed in the bottom of the mountain massif of Ćićarija which is composed mostly of carbonate rocks. The superficial deposits on the flysch slopes are formed by mixing coarse-grained siltstone detritus and silty to clayey soil material as a product of weathering and erosion of flysch bed-rock. These slope deposits are potentially unstable due to unfavorable hydrology conditions, and mass movements are frequent. Typical landslides are mainly shallow rotational sliding of retrogressive type with slip surface formed on the contact of the su-perficial deposits and flysch bedrock. The Brus Landslide, which occurred in April 2005, is an atypical translation type of sliding in flysch formation, overtaking siltstone and sandstone layers in flysch bedrock. The Brus Landslide was caused by unfavorable bedding orientation, stream erosion in the toe of the slide and unfavorable hydrogeological conditions caused by long-term rain period before sliding. Taking into account similar geological and morphological conditions in wider area of the Brus Landslide, a possibility of occurrence of similar landslides was analyzed. Description and genesis of the Brus Landslide is presented in the paper. For the wider area of the Brus Landslide, landslide hazard is analyzed by means of spatial analysis of geological and geomorphological conditions. The result of analysis is shown in the form of landslide susceptibility map that depicts zones of potential translational block sliding.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Rudarstvo, nafta i geološko inženjerstvo

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