Résumé
Parmi les projets actuellement à l'étude pour le stockage de déchets nucléaires une alternative au dépôt en site terrestre est la solution de sites sous-marins profonds.
Pour répondre aux conditions de sécurité nécessaires, il est indispensable que les sites étudiés présentent des caractéristiques d'environnement stables du point de vue géologique en particulier.
De plus, les propriétés géomécaniques (résistance au cisaillement, perméabilité) ont une importance fondamentale pour la réalisation pratique de ce stockage.
L'étude présente les résultats d'une campagne de sondages réalisée au large des Iles du Cap-Vert. Deux zones différentes ont fait l'objet d'investigations. On indique les résultats obtenus en les comparent et en montrant les avantages d'un site par rapport à l'autre.
Abstract
Among the projects studied at present concerning the storage of nuclear waste, the solution of deep submarine sites instead of land ones holds our attention.
To answer the required conditions of security, it's necessary for the studied sites to show some stable environment characteristics especially from the geological point of view.
Moreover, the geomechanic characteristics (shearing stress, permeability) have a fundamental importance for the practical realization of this storage.
This study presents the results of a boring campaign accomplished off the Cap-Vert Isles. Two different zones have been investigated. We show the results obtained by comparing both sites and by showing the advantages of one site over the other.
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Tisot, J.P., Le Suavé, R. Propriétés géomécaniques des sédiments profonds de l'Atlantique nord en liaison avec le stockage de déchets nucléaires. Bulletin of the International Association of Engineering Geology 34, 87–94 (1986). https://doi.org/10.1007/BF02590239
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DOI: https://doi.org/10.1007/BF02590239