Aquaforce Concrete Services was engaged by Tideway East to undertake various hydro demolition works within the 28m diameter shaft being sunk at the Chambers Wharf site, Bermondsey, south of the river and close to Tower Bridge. Chambers Wharf is one of Tideway’s main drive sites and the shaft will be used to launch the Tunnel Boring Machine (TBM) Selina, which will travel 5kM eastwards to the Abbey Mills Pumping Station. It will also be used to receive the TBM’s Ursula from Tideway Central and Annie from the Greenwich connection tunnel. The hydro demolition works were necessary to facilitate a number of modifications required to the diaphragm walls of the shaft at various depths as the excavation progressed. Works commenced on site January 2019 when the shaft was at a depth of ap

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