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Hydrologie et hydraulique torrentielle, étude d’un cas pratique : la Roize

Abstract : Steep slope stream hydraulics, i.e. mountain-rivers’ hydraulics is a complicated field of works. It is a relatively young science with several differences compare to low-lands-river hydraulics. Flash-floods are fast-events, and are thus hard to observe. They are, in addition, violent, which make really complicated to monitor it. IRSTEA is undertaking studies of few “large” and very active torrents. However, all streams do not belong to this category. This study of the Roize, more classical torrent, will highlight the type of phenomena that occur in this torrent, as for instance bed-load transport or debris flows. In addition, in this case-study, a complete series of methods allow us to estimate the solid-transport of the Roize. Combining geomorphology, historical analysis, hydrology, hydraulics and solid-transport-formula allow us to gather a global-point of view of what occur in the Roize based on estimation of rains, water-discharges and transported-sediment-volumes for different time period. These new data are useful to assess the natural-hazards related to the Roize.
Mots-clés : ROIZE COURS D'EAU
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https://hal.inrae.fr/hal-02605416
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Submitted on : Saturday, May 16, 2020 - 10:58:25 AM
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  • HAL Id : hal-02605416, version 1
  • IRSTEA : PUB00052518

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E. Lamand, Guillaume Piton, A. Recking. Hydrologie et hydraulique torrentielle, étude d’un cas pratique : la Roize. irstea. 2017, pp.89. ⟨hal-02605416⟩

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