ABSTRACT
During the dewatering of a hydraulic tunnel as part of maintenance phase, a lining collapse was discovered. The surrounding material consisted of water-sensitive clay of karstic origin (slaking). A repair plan was developed, considering the site’s remote location and the urgency to restore water flow to the gallery. The plan involved constructing a new lining using conventional cast-in-place concrete and shotcrete, followed by grouting works.Translated with www.DeepL.com/Translator (free version)
