The propagation of a debris flow occurred by the intense rainfall on the 25th October 2011 in the eastern Liguria region was studied by numerical means. The site and the soil were preliminarly characterized in order to estimate the parametres of the rheological model. Then, a two-dimensional numerical model was used to simulate the time development of the velocity and the thickness of the flowing material. The supplement of additional material to the propagating debris flow was considered to investigate the effect of the debris entrainment of the run-out process and on the kinetic energy of the flow. In particular, kinetic energy is used as a criterion to infer the riskiness of the debris flow.
Numerical simulation of a debris flow propagation: a case of study in Cinque Terre, Liguria
MAZZUOLI, MARCO;BERARDI, RICCARDO
2016-01-01
Abstract
The propagation of a debris flow occurred by the intense rainfall on the 25th October 2011 in the eastern Liguria region was studied by numerical means. The site and the soil were preliminarly characterized in order to estimate the parametres of the rheological model. Then, a two-dimensional numerical model was used to simulate the time development of the velocity and the thickness of the flowing material. The supplement of additional material to the propagating debris flow was considered to investigate the effect of the debris entrainment of the run-out process and on the kinetic energy of the flow. In particular, kinetic energy is used as a criterion to infer the riskiness of the debris flow.
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