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Journal of Mountain Science

, Volume 8, Issue 2, pp 117–123 | Cite as

The Séchilienne (France) landslide: a non-typical progressive failure implying major risks

  • Jean-Louis DurvilleEmail author
  • Christophe Bonnard
  • Pierre Potherat
Article
  • 109 Downloads

Abstract

The National Road RN 91 has been threatened for about twenty-five years by a huge landslide, located 25 km south-east to the town of Grenoble (France). If several million cubic meters of rock fall down, the debris will dam the valley. Then the failure of the dam by overtopping and rapid erosion might result in a catastrophic flood and dramatic consequences for human life, environment and economy throughout the valley. The paper presents the hazard assessment based on geological and hydrological surveys, including small scale hydraulic tests, as well as the risk evaluation that has been performed. The risk management relies first upon a high level monitoring and an emergency plan; various mitigation strategies have been considered.

Keywords

Landslide Progressive failure Séchilienne France 

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References

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Jean-Louis Durville
    • 1
    Email author
  • Christophe Bonnard
    • 2
  • Pierre Potherat
    • 3
  1. 1.Conseil général de l’environnement et du développement durableParisFrance
  2. 2.Independent expertPBBG SALausanneSwitzerland
  3. 3.Centred’études techniques de l’équipementLyonFrance

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