Articles | Volume 12, issue 5
Nat. Hazards Earth Syst. Sci., 12, 1693–1699, 2012
https://doi.org/10.5194/nhess-12-1693-2012

Special issue: Documentation and monitoring of landslides and debris flows...

Nat. Hazards Earth Syst. Sci., 12, 1693–1699, 2012
https://doi.org/10.5194/nhess-12-1693-2012

Research article 24 May 2012

Research article | 24 May 2012

Debris flow risk mitigation by the means of rigid and flexible barriers – experimental tests and impact analysis

L. Canelli1, A. M. Ferrero1, M. Migliazza2, and A. Segalini1 L. Canelli et al.
  • 1DICATeA, University of Parma, Italy
  • 2Dept. of Earth Science, University of Milan, Italy

Abstract. The impact of a debris flow on a structure can have disastrous effects because of the enormous destructive potential of this type of phenomenon. Although the introduction of risk mitigation structures such as the Sabo Dam, the filter dam and more recently flexible barriers is usual, there are very few methods that are universally recognized for the safe design of such structures. This study presents the results of experimental tests, conducted with the use of a specifically created flume, in order to obtain detailed knowledge of the mechanical aspects, and to analyze the dynamics of the impact of a debris flow on different types of structures. The analyses of the tests, together with the calculation of the thrust caused by the flow, have made it possible to analyze the dynamics of the impact, which has shown differing effects, on the basis of the type of barrier that has been installed.

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