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| Titel |
Experimental investigation on steady granular flows interacting with an obstacle down an inclined channel: study of the dead zone upstream from the obstacle. Application to interaction between dense snow avalanches and defence structures |
| VerfasserIn |
T. Faug, P. Lachamp, M. Naaim |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 2, no. 3/4 ; Nr. 2, no. 3/4, S.187-191 |
| Datensatznummer |
250000279
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| Publikation (Nr.) |
 copernicus.org/nhess-2-187-2002.pdf |
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| Zusammenfassung |
| An experimental investigation with dry
granular flows passing over an obstacle down a rough inclined channel has
been performed. The aim is to improve our understanding of the interaction
between dense snow avalanches and defence structures. Specific attention
was directed to the study of the zone of influence upstream from the
obstacle, linked to the formation of a dead zone. The dead zone length L
was systematically measured as a function of the obstacle height H
and the channel inclination θ, for several
discharges. In a whole range of channel inclinations, all the data are
shown to collapse into a single curve when properly scaled. The scaling is
based on the introduction of a theoretical deposit length (depending on H,
θ and the internal friction angle of the
material, φ) and a Froude number of the flow
depending on the obstacle height. |
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