Fig. 4
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Déplacements verticaux mesurés dans deux sections d’un tunnel de production (cercles vides pour la section qui est non exposée à la congélation et cercles pleins pour la section exposée à la congélation). Pour ne pas encombrer la figure, uniquement les valeurs mesurées par les capteurs de la moitié droite de la section sont représentées.
Comparison between vertical displacements (negative indicates settlement) recorded in a section that is exposed to freezing (solid circles) and vertical displacements recorded in a section that is not exposed to freezing (empty circles). To avoid overlap, only data retrieved from targets 1, 3, 5 and 7 are plotted.
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