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Large-scale distributed fiber optic sensing network for short and long-term integrity monitoring of tunnel linings

Structural integrity assessment is essential in modern tunneling to ensure safe construction works. State-of-the-art monitoring approaches like displacement readings of geodetic prisms are often limited in the spatial as well as the temporal measurement resolution, which is why potential safety hazards might be overlooked. This paper introduces a large-scale distributed fiber optic sensing (DFOS) network inside the tunnel lining of a highway tunnel currently under construction in Austria. The tunnel construction site faces challenging geological conditions with loose rock excavation near to the surface with minimal covering. Fiber optic sensing cables were installed
Large-scale distributed fiber optic sensing network for short and long-term integrity monitoring of tunnel linings
Journal of Civil Structural Health Monitoring on Springer March 17, 2022
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