The monitoring of an existing cast iron tunnel with distributed fibre optic sensing (DFOS)

Chang Ye Gue, M Wilcock, MM Alhaddad, Mohammed Elshafie, Kenichi Soga & Robert Mair
Instrumentation is vital to tunnelling projects for validation of design assumptions, monitoring of trigger levels during construction and also serving as a feedback loop to understand the deformation mechanisms of the particular problem which could be used to improve future designs. It can also be used for long term monitoring of the tunnel for maintenance purposes. Distributed fibre optic sensing (DFOS) systems based on brillouin optical time domain reflectometry are able to provide continuous and...
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