Some Considerations On The Application
Of The FLO-2D Model For Debris Flow
Hazard Assessment
Author(s)
V. D’Agostino & P. R. Tecca
Abstract
The two-dimensional flood routing model FLO-2D, with the capabilities of
simulating non-Newtonian sediment flows, is becoming more widely used to
route debris flows over alluvial fans of alpine torrents and to delineate hazard
areas of inundation.
Nevertheless the different applications described in the literature are not
comparable, because they are based on different assumptions related to the
numerous parameters governing the debris flow simulation. This paper reports
the applications of the FLO-2D computer model and discusses the assumptions
made for the replication of two well documented debris flow events at Fiames
(Belluno) and Rio Dona (Trento) in the Eastern Dolomites.
The simulation results are consistent with the field observations in terms of
maximum flow depths and the extent of the inundated areas in the two study
sites. These two applications have enhanced the experience for the requirements
of model input data in small alpine catchments, in particular the assessment of
the main rheological parameters of flows, that are crucial in the design of debris
flow countermeasures; leading to a proposed simplification in choosing the
FLO-2D rheological parameters; and facilitating the results comparison and their
interpretation among different FLO-2D simulations.
Keywords: Alps, debris flow, hazard mapping, 2D model.
1 Introduction
Laboratory and field researches are available in the literature on the debris flow
reology. The main aim of such investigations is the capability to model
Keywords
Alps, debris flow, hazard mapping, 2D model.
Related Book
Other papers in this volume
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