Tunnel monitoring system
Design of an automated measurement system to assess convergence and deformation in tunnels.
The system includes a patented algorithm by Prof. Carlos Dinis da Gama (IST – Lisbon, Portugal) which measures convergence from the walls deformation, without interfering with the tunnel operation and providing real-time data.
The first system was installed in Rossio railway tunnel, owned by Refer, in 2007. This system accounted for more than 800 fiber optic sensors along 100 tunnel sections.