The Vajont disaster occurred in 1963 when a landslide estimated in about 270 million cubic meters fell into the Vajont hydroelectric reservoir. The generated wave, after climbing the opposite side of the valley to a height of about 200 m over the crowning, overtopped the Vajont dam, sweeping away the downstream villages and causing about 2000 casualties. In this study the coupled SPH modelling of both the Vajont landslide and the induced tsunami, at full scale is performed with the code SPHERA. The stored water is modelled as a slightly compressible Newtonian fluid. The landslide kinematics is reproduced adopting a non-Newtonian rheological model developed for the SPH analysis of dense granular flows. The obtained results, i.e. prediction of the landslide falling time and maximum wave run-up on the opposite mountain side, are in good agreement with the data collected from the post-event survey.
3D–SPH advanced modelling of the Vajont landslide
MANENTI, SAURO;GALLATI, MARIO;SIBILLA, STEFANO;
2015-01-01
Abstract
The Vajont disaster occurred in 1963 when a landslide estimated in about 270 million cubic meters fell into the Vajont hydroelectric reservoir. The generated wave, after climbing the opposite side of the valley to a height of about 200 m over the crowning, overtopped the Vajont dam, sweeping away the downstream villages and causing about 2000 casualties. In this study the coupled SPH modelling of both the Vajont landslide and the induced tsunami, at full scale is performed with the code SPHERA. The stored water is modelled as a slightly compressible Newtonian fluid. The landslide kinematics is reproduced adopting a non-Newtonian rheological model developed for the SPH analysis of dense granular flows. The obtained results, i.e. prediction of the landslide falling time and maximum wave run-up on the opposite mountain side, are in good agreement with the data collected from the post-event survey.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
