By working eollaboratively and with careful planning J. Murphy εt Sons, OTB and Network Rail ensured the successful completion of this complex and challenging project. While these were all proven techniques, they were combined in a way which was unique in the UK. The SCL strengthening of the Down Tunnel was the first time that Network Rail had completed such ntrusive work in possessions rather than a blockade. The design, procurement and commissioning of the bespoke 8.9m id tunnel shield was completed in only seven months. Overall the project was taken from feasibility stage to handback in under 14 months. During the construction works there were no accidents to the workforce or environmental incidents.
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