 Finished Projects / Tunnel de la Roche St-Jean
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Tunnel de la Roche St-Jean, Monitoring of rock boulders with vibration sensors and extensometers.
For the completion of the highway N16, Transjurane the rock face of Roche St-Jean has to be crossed. In the narrow gorge of the river Birse, the main road and the railway line are endangered of rock fall due to blasting of the tunnel. |
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Behind the road the river Birse
and the railway line |
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Entrance area of the tunnel Roche St-Jean |
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| Therefore Solexperts has installed a complete automatic measurement system, which collects the data of the extensometers and the vibration sensors, checks permanently for exceeding values and displays the data on a password protected site on the Internet. |
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| Vibration sensor |
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Extensometer |
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Vibration sensor attached to
ground wall of a nearby house |
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The brain of the measurement system |
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| For the blasting the road and the railway line have to be closed. Minutes after the blasting the current extensometer data are transferred to the mobile of the responsible person so that the road and the railway line can be reopened as quickly as possible. |
