Monitoring and studying rock movements using Fiber Bragg grating strain sensors.

Giacomelli U., Beverini N., Carbone D., Carelli G., Francesconi F., Gambino S., Grassi R., Maccioni E., Morganti M., Orazi M., Peluso R., Sorrentino F.
  Venerdì 30/09   09:00 - 12:00   Edificio Psicologia 2 - Aula 2A   IV - Geofisica, Fisica dell'ambiente
Rock strains detection is one of the principal ways to monitor geohazards. Classics strainmeters are cumbersome, hard to install and very expensive. Opto-electronics devices based on fiber Bragg grating technology allow to realize strainmeters with high sensitivity, low-cost, compact and high performing. In the framework of the EC FP7 MED-SUV project, we have developed a fiber 3-dimensional strain sensor that has been successfully installed in the bottom of a 8.5 meter borehole on the slope of mount Etna in order to monitor the rocks strains induced by volcanic activity.