Empirical Methods For The Estimation Of
Debris Flow Deposition Areas
Author(s)
C. Achille, D. De Wrachien, F. Fassi & S. Mambretti
Abstract
Debris and hyper-concentrated flows are among the most destructive of all
water-related disasters and in recent years have attracted more and more
attention from the scientific and professional communities and concern from
public awareness, due to the increasing frequency with which they occur and the
death toll they claim. The study of debris flows can be subdivided into three
main topics: assessment of the magnitude of the phenomenon; study of debris
flow motion; determination of the extension of the deposits.
This last issue is of paramount importance from an engineering point of view,
due to the fact that it determinates which areas must be considered at risk, with
all the consequences linked to the protection of population, and the
predisposition of safety plans concerning different activities such as building
construction.
In this paper, a review of the most important empirical procedures of
prediction of depositional areas is presented, with the aim to verify the
applicability of the formulas to events different from those for which the
methods were calibrated, and then to try to unify them, in order to originate a
more reliable methodology.
Laboratory tests were carried out to integrate the data available in literature.
The experimental data have been recorded with photogrammetry methods and
3D models of the deposits have been designed and validated.
The proposed empirical method will allow us to improve both mitigation
measures and hazard mapping procedures.
Keywords: debris flow, empirical method, deposits on alluvial fan, laboratory
tests.
Keywords
debris flow, empirical method, deposits on alluvial fan, laboratory
tests.
Related Book
Other papers in this volume
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