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Identification of Rock Fall Prone Areas on the Steep Slopes Above the Town of Omiš, Croatia


Sečanj, Marin; Mihalić Arbanas, Snježana; Kordić, Branko; Krkač, Martin; Bernat Gazibara, Sanja
Identification of Rock Fall Prone Areas on the Steep Slopes Above the Town of Omiš, Croatia // Advancing Culture of Living with Landslides / Mikoš, Matjaž ; Vilimek, Vit ; Yin, Yueping ; Sassa Kyoji (ur.).
Cham, Switzerland: Springer, 2017. str. 481-487 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Identification of Rock Fall Prone Areas on the Steep Slopes Above the Town of Omiš, Croatia

Autori
Sečanj, Marin ; Mihalić Arbanas, Snježana ; Kordić, Branko ; Krkač, Martin ; Bernat Gazibara, Sanja

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

Izvornik
Advancing Culture of Living with Landslides / Mikoš, Matjaž ; Vilimek, Vit ; Yin, Yueping ; Sassa Kyoji - Cham, Switzerland : Springer, 2017, 481-487

ISBN
978-3-319-53482-4

Skup
4th World Landslide Forum

Mjesto i datum
Ljubljana, Slovenija, 29.5.-2.6.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Rock fall ; Point cloud ; Split-FX ; Discontinuity extraction ; Kinematic analysis ; Omiš

Sažetak
The aim of this paper was identification of rock fall prone areas above the historical town of Omiš, located at the Adriatic coast in Croatia. Unstable areas were identified by kinematic analysis performed based on relative orientations of discontinuities and slope face. Input data was extracted from the surface model created from the high-resolution point cloud. The town of Omiš is threatened by rock falls, because of its specific location just at the toe of Mt. Omiška Dinara. Rock fall risk is even higher due to rich cultural and historical heritage of the town. Collection of spatial data was performed by Time of Flight and phase-shift terrestrial laser scanners in order to derivate high resolution point cloud necessary for derivation of surface model. Split-FX software was used to extract discontinuity surfaces were semi-automatically from the point cloud data. Spatial kinematic analysis was performed for each triangle of TIN surface model of the investigated slopes to identify locations of possible instability mechanism. From the results of the spatial kinematic analysis, the most critical parts of the slope have identified for planar and wedge failure and flexural and block toppling. Verification of identified rock fall areas was performed by visual inspection of hazardous blocks at the surface model. Identified rock fall prone areas, unstable blocks and probable instability mechanisms on the steep slopes above the town Omiš, present the input data for risk reduction by efficient design of countermeasures.

Izvorni jezik
Engleski

Znanstvena područja
Rudarstvo, nafta i geološko inženjerstvo



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