engleski

Protection of a Cultural Heritage Site in Croatia from Rockfall Occurrences

The small historical town in the middle part of Dalmatia, City of Omiš, Croatia, was threatened by numerous rockfall occurrences in the past that caused significant damage at residential structures and infrastructure. After several stages and design solutions completed in the past, installation of rockfall protection structures at the slopes above the City of Omiš was conducted from 2016 to 2018. Installed stabilization and protection structures represent the first stage of mitigation measures, while the rockfall hazard from the upper parts of the slope should be mitigated in the future. In this paper, we analyzed the efficiency of installed rockfall barriers in case if rockfall initiations would occur from the upper positions of the slope. The results of conducted parametric rockfall simulations indicate on the probability that some of the rock blocks existing in possible rockfall sources in the upper part of the slope will not be retained by installed rockfall protection barriers and can reach buildings in the old part of the City of Omiš. Conducted analyses suggest that the existing protection measures will not ensure the safety of residents and buildings in the City of Omiš from all possible future rockfall events.

Rockfall, point cloud, modelling, rockfall protection, rockfall barriers

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