Fig. 11
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Essais hydrauliques orientés sous la voûte du Barrage de Grand-Maison. Disposition des éléments de reconnaissance par galeries et sondages. 1 : Galeries rive droite ; 2 : galeries rive gauche ; 3 : galerie sous-fluviale ; 4 : diagramme de fracturation (environ 1000 mesures) (Doc. Louis, 1974).
Oriented hydraulic testings under the Grand-Maison Arch Dam. Exploration elements (galleries and boreholes). 1: Right galleries; 2: left galleries; 3: gallery under the valley; 4: fracturation diagram (about 1000 measurements) (Doc. Louis, 1974).
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