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Lanfranconi, Camilla; Frattini, Paolo; Sala, Gianluca; Dattola, Giuseppe; Bertolo, Davide; Sun, Juanjuan; Crosta, Giovanni Battista
Natural hazards and earth system sciences, 06/2023, Letnik: 23, Številka: 6Journal Article
The presence of trees along the slope and block fragmentation at impact strongly affect rockfall dynamics and hazard as a consequence. However, these phenomena are rarely simulated explicitly in rockfall studies. We performed rockfall simulations by using the 3D rockfall simulator Hy-Stone, modeling both the presence of trees and fragmentation through specific algorithms implemented in the code. By comparing these simulations with a more classical approach that attempts to account implicitly for such phenomena in the model parameters and by using a new probabilistic rockfall hazard analysis (PRHA) method, we were able to quantify the impact of these phenomena on the design of countermeasures and on hazard.
