INSIGHT | CROSSRAIL LIBRARY
The Learning Legacy also produced three special issue journals, two with the ICE and one with the Association for Project Management (APM). A paper entitled Machine-driven Tunnels on the
Elizabeth line covers the TBM tunnelling [https://
ll.crossrail.co.uk/documents/crossrail-project-machine- driven-tunnels-elizabeth-line-london/]. Two papers cover the sprayed concrete work:
● Use of Sprayed Concrete Tunnel Linings on London’s Elizabeth line [
https://ll.crossrail.co.uk/ documents/13005/], and,
Top left:
Spraying for SCL works on Crossrail
Top right:
Western Tunnels team celebrate end of tunnelling 2014
Above:
Construction of tunnels below Finsbury Circus at Crossrail’s Liverpool Street site
In all there are 840 items on the site, arranged
under the 12 Learning Legacy themes which reflect the functions of a typical major infrastructure project. Most of the items of interest to readers of T&T will
be in the Civil Engineering [
https://ll.crossrail.co.uk/ learning-legacy-themes/engineering/civils/] topic area. A large proportion of the technical papers in the
Learning Legacy came from Crossrail’s annual Technical Papers competition. The competition encouraged colleagues from across the different organisations delivering the project to write up their experience, and each year the winning paper received recognition and all authors received a copy of the hardback book published in partnership with ICE Publishing. There are dozens of papers from the competitions
relating to tunnelling but a few highlights are: ● Tunnelling out of a drift filled hollow under Moorgate [
https://ll.crossrail.co.uk/documents/tunnelling-drift- filled-hollow-moorgate/]
● Design and Construction of Inclined Escalator Shafts and Stair Adit at Liverpool Street and Whitechapel Stations [
https://ll.crossrail.co.uk/ documents/design-construction-inclined-escalator- shafts-stair-adit-liverpool-st-whitechapel-stations/], and
● Comparison between Sprayed and Cast In-situ Concrete Secondary Linings at Bond Street and Farringdon Stations [
https://ll.crossrail.co.uk/ documents/comparison-sprayed-cast-situ-concrete- secondary-linings-bond-street-farringdon-stations/].
44 | December 2023
● A Deep-mined Station on the Elizabeth line, London [
https://ll.crossrail.co.uk/documents/deep-mined- station-elizabeth-line-london/].
Possibly one of the most useful recent additions is the archive of monitoring reports, which contain the results of instrument monitoring above the new station and running tunnels, this shows the movement of the ground in response to the excavations: [
https://ll.crossrail.co.uk/documents/instrumentation-
and-monitoring-close-out-reports/]. But there is also a lot of content in the other
engineering topics that will be of value to those working on major schemes, in particular the Systems Integration and Technical Assurance topic which contains all the experience of the challenges to integrate, test, commission and handover the railway. And beyond that, in the other themes, such as the Health and Safety, Environment, and the Project and Programme Management themes. The baton has been picked up by HS2, which has its
own learning legacy at
https://learninglegacy.hs2.org.uk/ and we hope that other schemes and other industries will also follow. Now that the Crossrail programme has closed, the
Learning Legacy website will be maintained online at the same web address by Transport for London (TfL), but as a static site so that hosting costs are minimal. It is hoped that the experience shared in the Learning Legacy will help our industry improve project delivery for some time to come. Go to:
https://ll.crossrail.co.uk/
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