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ROCKFALLS

Rockfall detailed studies with 3D modeling simulations (RAMMS::Rockfall) in order to characterize rockfalls (energy and rebound height) with the aim of obtaining a solid base to correctly draft the protections (it depends on the admisible residual hazardness)

In order to conduct rockfall studies, there is the Austrian Standard ONR24810, which tell us how to carry on a rockfall study and how to design the proper protections. The ONR24810 is the only worldwide recognized and approved norm on how to conduct rockfalls studies and protection projects

Rockfall

 

Freefall, vertical or semi-vertical of isolated blocks. Rocks are mobilized by discontinuity surfaces and with the help of weathering processes. The initial mechanisms can be diverse: sliding, toppling, sliding wedge, etc. A rockfall can be divided into three parts: source area or scar which can present various morphologies, track area and finally the deposition zone in the lower part of the slope. Detached volumes are lower than 400 m3 and occur preferably in slopes with an inclination equal or higher than 45 degrees.

Fragmentary detachment


Huge rockfall volume in a single event of a significant volume of rock, less than 10,000 m3 volume which subsequently fragments during its trajectory. This type of phenomenon has a starting area (not a single point). It can be can be divided into three parts: source area or scar which can present various morphologies, track area and finally the deposition zone in the lower part of the slope. Like rockfalls, fragmentary detachments occur preferably in slopes with an inclination equal or higher than 45 degrees.

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