What is it about?
Completed in 2016, the Lee tunnel is the largest-diameter and deepest tunnel ever built in London. The 6·9km long, 7·2m dia., 80m deep storage tunnel for combined stormwater and sewage was also Thames Water’s largest ever infrastructure project. The tunnel has already cut combined sewage and stormwater over ows from London into the Thames by over 40%. In 2023 it will carry nearly all of the capital’s over ows when the £4·2 billion Thames Tideway tunnel connects into it. This paper describes the design and construction of the award-winning project. Innovations included steel- bre-reinforced concrete slip-formed shaft linings, launching a tunnel-boring machine from a shaft without a back-shunt, full-round shuttered secondary tunnel linings and water-cooled pump motors.
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Read the Original
This page is a summary of: Lee tunnel project – the first step toward a cleaner River Thames, Proceedings of the Institution of Civil Engineers - Civil Engineering, January 2018, ICE Publishing,
DOI: 10.1680/jcien.17.00044.
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Resources
Constructing the Lee Tunnel
The four-mile Lee Tunnel -- London's deepest ever tunnel
Artists impressions
3D movie with artists impressions
Inside the Lee Tunnel Sewer - by Londonist
Welcome to London's deepest tunnel - deeper even than Crossrail. This is the Lee Tunnel, a brand new sewer running from Abbey Mills to Beckton. In a year's time, the trains will be gone, replaced by a river of raw sewage that would easily swamp a double-decker bus.
Lee Tunnel : Pumping shaft Central Wall construction
Timelapse of the pumping shaft central wall
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