Breakthrough! The Crossrail tunnelling story, Maidenhead

15 June, 2016 | 18:00 - 20:00

See the challenges and problems overcome by the engineers of Crossrail.
See the challenges and problems overcome by the engineers of Crossrail.

About this event

Our speakers for this event are Steve Kay, Delivery Director for the civil works, Crossrail and Mike King, Head of Underground Construction, Crossrail.

The presentations will provide a status on the Crossrail programme and explain the tunnelling techniques used. This is a great opportunity to hear about some of the challenges encountered and how they were overcome, plus understand some of the lessons learned for the industry moving forward.

Crossrail's tunnelling marathon under London is now complete. Tunnelling began in May 2012 and ended at Farringdon in May 2015 with the arrival of tunnelling machine, Victoria. Over these last three years, eight 1,000 tonne tunnel boring machines (TBMs) bored 42kms or 26 miles of new 6.2 diameter rail tunnels under London.

The machines were operated by "tunnel gangs" of 20 people, working in shifts around the clock to construct the tunnels, carving out around 3.4 million tonnes of earth. The tunnels, constructed using TBMs and in stations and caverns using sprayed concrete lining methods, weave their way between existing underground lines, sewers, utility tunnels and building foundations from station to station at depths of up to 42m.

Event materials

The following materials are available for download: