As part of the Smart Tunnel project the Cambridge Centre for Smart Infrastructure and Construction has installed Imetrumâ€™s precision monitoring system.
Online PR News – 19-March-2015 – Bristol, UK – At the recent International Tunnelling & Underground Space Awards, the Centre for Smart Infrastructure and Construction (CSIC) won the Ground Investigation and Monitoring Award for its innovative â€śSmart Tunnelâ€ť project.
As part of the Smart Tunnel project lead by Mehdi Alhaddad, the Cambridge Centre for Smart Infrastructure and Construction (CSIC), has installed Imetrumâ€™s novel camera based precision monitoring system alongside their ground breaking technologies in the Royal Mail Tunnel in Central London. Ring shearing, convergence and rotation were monitored for nine months to understand the effects of nearby Crossrail tunnelling works.
Although the system installed comprises just four cameras, it remotely monitored movement at 250 different points within the tunnel. Running continuously for 9 months, Imetrumâ€™s VX-M system monitored movement of these targets, densely spread over a distance of 30 metres.
Imetrumâ€™s system allowed engineers to see how each cast iron ring in the tunnel moves in relation to the next, and also measures the horizontal and vertical convergence of the tunnel. This data was then fed into a customised project dashboard, so that Cambridge engineers could easily monitor the tunnel from a range of sensors, including fibreoptics, CSATTAR digital image correlation system (developed in CSIC) and a wireless network of displacement transducers (LPDTs) and tilt meters.
During the project a substantial amount of tunnelling and station enlargement took place underneath Liverpool Street Station, some of it within 2m of the historic Royal Mail tunnel.
Kenichi Soga, Professor of Civil Engineering at the University of Cambridge, endorsed the choice of monitoring equipment. â€śWe collected baseline data for a few months prior to the tunnel boring machine launch, and continued throughout tunnelling works. Imetrumâ€™s data is of a very high resolution for a non-contact system, and has contributed to the overall understanding of the movement of bolted segmental tunnels and has boosted our confidence in the systems that we are developing here in Cambridge. The whole Smart tunnel team should be proud of their work, and its recognition at the recent International Tunnelling Association Awards.â€ť
Paul Waterfall Imetrumâ€™s project leader: â€śIt was an honour to be chosen for such a prestigious project and the Award is well-deserved. Imetrumâ€™s system is ideal for projects of this type and we pride ourselves in working closely with our customers to help them achieve their aims.â€ť
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March 17, 2015