Project
overview

Business area

Infrastructures

Category

Subway

Status

Completed

The project consists in the construction of a tunnel in TBM EPB excavation diameter 9,15m and 3 km long, of four stations of approximate dimensions 82 meters by 20, 20 to 25 meters deep – 2 stations made in open air within diaphragms and 2 mixed, Entrance well in diaphragms and part in traditional underground – and three ventilation wells and fire access.

The particular geology encountered during the excavation of the tunnel required a constant and accurate control of the excavation pressure of the TBM.