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Analiza padanja kamenja na odseku ceste Renke-Zagorje : diplomsko delo = rock fall analysis on the road section Renke-Zagorje, Central Slovenia : diploma thesis
Rozina, Darja, 1983-
In the scope of my bachelor thesis I have studied several examples of rockfalls along the main road Renke -Zagorje G II 108, section of 1183 from 10,500 to 0,000 kilometres. This road is important on ...a national level and faces a large daily flow of traffic. The research area mainly consists of Triassic and Jurassic carbonates, Cretaceous flysch and Quaternary deposits. Unfavourable geological conditions, mechanical weathering, influence of tectonics (disintegrated rocks) and steep slopes are the main triggers of rockfalls that frequently threaten the road and the vehicles on it. On the selected section 100 rocks of different size were collected and their dimensions and lithological composition were determined. Furthermore, the existing prevention measures, damaged road surface and fences were carefully inspected. RocFall 5.0 software was applied on 14 profiles to simulate the energy, velocity and bounce height of the falling rocks. Each profile was characterized by the horizontal line and cumulative kinetic energy in the middle of the road. Using the simulation of rockfalls, I found that the maximum kinetic energy generated by rockfalls in the middle of the road is 297 kJ. Based on data on rockfall events provided from the Police and Service maintenance of roads, a map of frequency of rockfalls events and existing prevention measures on the selected road section was prepared in GIS. From the map it can be seen that the rockfalls mostly occurred on road sections between 12,000 km and 12,500 km, and between 13,400 km and 14,300 km. These two road sections are under the greatest threat due to steep rock faces above the road and numerous ravines, which transect the slope and represent potential chanway of transport for rock debris. Nevertheless that road is almost entirely protected before rockfalls, stones and rocks are still appearing on the road. Numbers of recorded rockfall events were correlated with rainfall and values of minimum and maximum temperatures. However results not reflect the exact impact of correlated factor. Based on all obtained information and findings I could conclude that the studied section of road between Renke and Zagorje is almost entirely vulnerable, what is also evident from the rockfall risk map, one of the main deliverables of this thesis.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [D. Rozina], 2016
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