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Résumé

This documentary study carried out with the financial aid of the EEC and of the Commission for Atomic Energy aims to use available data to illustrate the development of natural fracturing in granite masses, downwards from the surface. The study deals with the Mont Blanc road tunnel, the EDF Arc-Isere tunnel, deep boring at Auriat and the Pyrenean outcrop at Bassies, as these four sites have figured in detailed geological and structural studies carried out over the last twenty years. This documentary study concentrates on analysis of : the relations between small fractures and large faults, the development of the direction and density of fractures in relation to depth, the consequences of natural and artificial decompression of the rocks, and the relationship detected between fracturing and the inflow of water. The main results of this study are summarized in the last chapter of the report.

Informations supplémentaires

Auteurs: BLES J L, BUREAU DE RECHERCHES GEOLOGIQUES ET MINIERES, ORLEANS (FRANCE);LANDRY J BUREAU DE RECHERCHES GEOLOGIQUES ET MINIERES, ORLEANS (FRANCE), BUREAU DE RECHERCHES GEOLOGIQUES ET MINIERES, ORLEANS (FRANCE)
Références bibliographiques: EUR 9381 FR (1984) FS, 62 P., BFR 250, EUROFFICE, LUXEMBOURG, POB 1003
Disponibilité: Can be ordered online
Numéro d'enregistrement: 1989123087400 / Dernière mise à jour le: 1987-01-01
Catégorie: publication
Langues disponibles: fr