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Démarche méthodologique pluridisciplinaire pour l'étude des instabilités de versants: application aux glissements du Rif central (Maroc)

type de publication      article in a national journal with a refereeing comitee
date de publication 2002
auteur(s) El Khattabi Jamal; Boulemia Chérif; Henry Eric; Carlier Erick
journal (abréviation) Revue Française de Géotechnique (Rev. Fr. Géotech.)
volume (numéro) 100
  
pages 109 – 119
résumé Ground instabilities have been the subject of numerous studies using two main methods : the naturalist and the mechanic methods. Those methods use an approach described as linear often lead to partial results, which makes it necessary to set up a transversal approach. In this paper we have elaborated a multidisciplinary methodological process, based on a transversal approach associating geomorphology, geology, hydrogeology and geotechnics. The base of the methodology lies on instability analysis followed by modeling and mapping. To test this methodology, our first experiment was carried out on the northern hillsides of the Central Rif (Morocco). The obtained results have made it possible to identify macrodestabilizing factors and microdestabilizing mechanisms responsible for the instabilities by bringing to light the role of the tectonic overthrust. The integration of those results into a rupture model allowed us to carry out simulations in 2D. This method can prove particulary efficient when we need to analyse and modelize phenomena or map the risks for rural or urban areas set on potentially unstable sites.
mots clés Africa ; North Africa ; two-dimensional models ; methodology ; urban areas ; simulation ; rupture ; overthrust ; tectonics ; hydrogeology ; geomorphology ; landslides ; slope angle ; instability ; Rif ; Morocco ;
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