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Abstract: During the excavation of the exploratory tunnel and the two cavities for the construction of the Brenner Base project through a particularly fault-ridden area, an intensive monitoring system was installed on the consolidation and support elements.This instrumentation measured the deformations of the excavated rock mass, the stresses induced by the excavation on the structures and the stress...
Abstract: During excavation of the exploratory tunnel for the Brenner Base Tunnel, partly through poor quality rock mass, severe deformations of the tunnel face occurred, indicating stability limit conditions. In spite of these deformations at the tunnel face, along the cavity and on the primary support elements, there was no indication of such stability limits for the tunnels, neither close to the...