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Tunnel monitoring - chapter 2 - TBM concrete lining

In this set of video (Tunnel monitoring) we would like to present some monitoring solution and suggestion that could be used during tunnel excavation. The chapter 2 is dedicated to TBM excavation method and concrete line monitoring solution. Main applied instruments are vibrating wire strain gauges embedded into the concrete lining to monitor the stress and strain of the full lining-ring. All the gauges can be connected to OMNIAlog datalogger using local multiplexer boxs.