Work on Tideway’s Greenwich Pumping Station site has reached a key milestone with the start of diaphragm wall construction for a shaft on the super sewer project.
The shaft will be used to connect the Greenwich Pumping Station with the 25km long Tideway Tunnel at Chambers Wharf.
Tideway delivery manager Jim Avent said: “This has taken more than a year of planning and really hard work by the team. It’s a huge milestone for the site and we’re excited to get started on the next stage of construction.”
The shaft will allow the Costain, Vinci Construction Grands Projets and Bachy Soletanche (CVB) joint venture to drive the 6.5m diameter tunnel to connect the site to the main tunnel. A grouted block is currently being undertaken next to the Chambers Wharf shaft through which the Greenwich tunnel boring machine will arrive.
CVB geotechnical construction manager Martin Stanley told GE that the shaft construction is challenging as the site close to the Dockland Light Railway, Network Rail infrastructure and buried structures associated with the listed pumping station.