<p>Reinforced earth structures are extensively used at the disposal site Longsgraben of the new Semmering base tunnel. These structures were monitored during construction using the observational method according to Eurocode 7. Geodetic measurements to ...

<p>In the last two decades, Brillouin distributed fiber-optic sensing has became a widely accepted, mature technology. On the other hand, geotechnical monitoring applications of this technology are still rare, as the fragile fiberoptic and the harsh soil environment ...

<p>Current safety requirements for both construction and operation of tunnels demand reliable monitoring and data processing methods. The conventional techniques of convergence measurements are characterized by intermittent recordings, frequently interrupting ...

<p>From many points of view, fiber optic sensors are the ideal transducers for civil structural monitoring. Being durable, stable and insensitive to external perturbations, they are particularly interesting for the long-term health assessment of civil structures. ...

<p>From many points of view, fiber optic sensors are the ideal transducers for civil structural monitoring. Being durable, stable and insensitive to external perturbations, they are particularly interesting for the long-term health assessment of civil structures. ...

<p>This paper presents the measurement principle of the SOFO system as well as examples of application to the monitoring of three tunnels. The Luzzone dam tunnel was excavated using conventional blasting techniques; the SOFO sensors were installed in radial ...