Oporto Metro. Lines C, S, J

— Project Description:

The project involved the realization of 2 new tunnels (C and S) and the rehabilitation of the Lapa Tunnel (J) for a total length of 7km (excavation diameter: 8.7m and 8.9m - internal diameter: 7.80m), including 10 underground stations, located every 750m to ease the access to passengers. The tunnels were excavated using two EPB-TBMs, while 6 stations were realized by NATM and 4 by Cut&Cover. The real-time interpretation of both the construction monitoring results and the TBM operational parameters, together with the continuous optimization of the design to respond to the conditions encountered brought this project to a state-of-the-art level, particularly with regard to ground movement management.

— Description of Services:

Detailed design of stations and tunnels, including geological, hydrogeological and geomechanical characterization; Buildings Condition Surveys and Build Risk Assessment (BCS&BRA); Construction Design and Supervision during Construction.