Recent trends in monitoring tunnelling-induced displacements of structures




Recent trends in monitoring tunnelling-induced displacements of structures


Monitoring and control of tunnelling induced displacements in urban areas are a matter of primary importance to minimise excavation risks and enhance project acceptance. For this purpose, suitable and reliable monitoring techniques are routinely adopted in underground construction. Fast progresses in sensor technology have boosted the development of innovative monitoring for tunnel projects through prototypes and field trials. The latter have been generally carried out in conjunction with the routine conventional monitoring, allowing for comparison and validation. Consequently, a wide interested has been generated around some innovative techniques that permit real-time control of induced strain of structures (e.g. fibre optics), allow for historical movements trends (e.g. InSAR), and may provide cost-effective additional information (e.g. LiDAR and photogrammetry). At the same time, resolution, power supply and communication potential of conventional measuring techniques for displacement monitoring have largely improved in recent years. This paper reviews the state-of- art of monitoring the displacements induced by tunnel construction and explores the current trends in developments of innovative sensing techniques.

Emilio Bilotta


18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)



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