Depth integrated modelling of fast landslide propagation

This paper deals with a simple yet effective model which can be used for prediction of propagation of fast catastrophic landslides. The main ingredients are: i) a hierarchical set of mathematical models describing the coupled behaviour between solid skeleton and pore fluids. Here we will arrive to a coupled depth integrated model; ii) a theological model describing the behaviour of the fluidized soil; iii) a numerical model to discretize mathematical and rheological models. The model performance has been assessed using a set of benchmark tests, including some provided by the Hong Kong Geotechnical Engineering Office.