Soil displacement measurements in Japan – distributed shape sensing
Monitoring ground behaviour is crucial to ensure the safety of provided work. Local deformations can’t be detected with conventional spot measurements. The aim of this study was to measure vertical displacements under the ground comprehensively in a geometrically continuous way by using DFOS technology. The 3DSensor with sufficient characteristics for ground application was provided for this project. Thanks to this, vertical displacements with high accuracy were measured.
DFOS Sensors Installed: 3DSensor
Project challenges
Benefits of using the DFOS monitoring system
Results of using the DFOS monitoring system
The 3DSensor was installed linearly along a flat surface and secured with loads placed every 5 m. Forced vertical displacement was applied at the center, away from the end of the 3DSensor connected to the optical reflectometer. Vertical displacement was measured 2.5 m forward and backward from the forced displacement point, with readings taken at 20 cm intervals using a laser displacement transducer. Raw strain data were collected both before and after deformation, allowing for precise calculation of displacements.
Example results
Recomendations (optional)
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John Doe
Project partner
