Author(s): Pavan Sara; Schippa Leonardo
Linked Author(s): Leonardo Schippa
Keywords: Breach; Piping; Flood event; Hydraulic risk
Abstract: In November 1990 the Italian river Reno was subject to an important flood event, during which a piping failure led to a breach formation and to a levee’s portion collapse in a country zone between Ferrara and Bologna. The whole event has been simulated coupling a fixed bed propagation model for the river flood simulation with a mobile bed breach evolution model. The two models are both based on the same mathematical structure, that is an original formulation of shallow water equations, particularly suitable for complex geometry case studies and natural rivers. The numerical algorithm has been also integrated with a piping phase simulation module, which properly connects the flood event to the following breach development. Numerical simulations results have been compared with surveyed data and with analogue analysis of the event, showing good accordance under several aspects.
Year: 2007