Research Project OFSTUNN Client Withheld, Spain Challenge Monitoring the movements of a road tunnel during remedial grouting works Resolution The Road tunnel in question has been su?ering from settlement due to soft ground conditions. During the middle of 2005, contractors entered the adjacent service tunnel and carried out a programme of regrouting works to strengthen the tunnel/soil interface and prevent further settlement. Geotechnical and civil monitoring experts, Sol Data were contracted to instrument the tunnel to measure movements before, during and after the regrouting works using Cyclops, their three axis Theodolite measurement system. Sol Data were partners to the UK project OFSTUNN (2002-2005) in which Smart Fibres developed the SmartRod system for long-term tunnel defor

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