Thames Tideway Tunnel – Update 2020
The Thames Tideway project has already been described in detail in tunnel issue 8/2016. Altogether six TBMs and several pipe jacking machines are currently at work on the 25 km long main tunnel and the connection tunnels of the new mega interceptor sewer in London. The depth of the tunnel system (25–80 m), the access only down shafts, material delivery and disposal on the Thames and the central inner-city location are daily challenges facing the tunnellers in the middle of the English metropolis. This article describes the current stat of the main construction works and the special features of the Thames Tideway Tunnel, especially the West contract.