TELEMAC assisted BRGM in cavity monitoring in the south of France with tailor-made convergence rods to monitor deformations of overlay terrain and alert in the event of unusual movements.
A portion of the concrete lining of the SAN SALVATORE tunnel collapse in June 2017 due to water accumulation. It was decided to install distributed fiber optic sensors onto the tunnel liner for a continuous and automatic monitoring of the tunnel.
The monitoring system gives real-time data on the behavior of the concrete containment and its steel liner. Ensuring leak-tightness are traditional sensors (in particular vibrating wire) and fiber optic sensors.