ABSTRACT
So the monitoring of the digging constitutes an important database. The contract manager follows up the digging daily along with a detailed geological follow-up of the tunnel faces (GEOTER) and in installing measurement areas (convergence, extensometer, etc.). The instrumentations set up during the digging are followed beyond the excavation works in order to get dates on the long-term behaviour.After the full excavation of the gallery, borings are realised in order to characterize the EDZ. This article presents the follow up of the digging works carried out by the contract manager. A special care is given to the analysis of the support functioning.
