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Engineering geology and tunnelling in the Limmo Peninsula, East London

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Title: Engineering geology and tunnelling in the Limmo Peninsula, East London
Authors: Linde-Arias, E
Harris, D
Ghail, RC
Item Type: Journal Article
Abstract: The Limmo Peninsula site has some of the most complex geology of London's Crossrail project and was the launching point for four tunnel boring machines (TBMs) to allow construction of Crossrail's eastern running tunnels. It is located in East London, c. 2 km east of the Canary Wharf business district, adjacent to the River Lea. It consists of a ventilation shaft, an auxiliary shaft, two sprayed concrete lining (SCL) tunnels interconnecting the shafts and four SCL adits for assisting in the launching of the TBMs. As part of the design requirements, some geological formations had to be depressurized from surface wells. The site is geologically complex: it is in the vicinity of a drift-filled hollow and it is located within the area of influence of several tectonic features. A geological ground model developed from important new information obtained during the design stage ground investigations and from direct observations conducted during construction stages reveals an inverted transtensional flower structure (i.e. it is now a transpressional restraining bend). Of special interest are the unusually low values of undrained shear strength of the London Clay associated with the tectonic setting.
Issue Date: 13-Nov-2017
Date of Acceptance: 20-Aug-2017
URI: http://hdl.handle.net/10044/1/51387
DOI: https://dx.doi.org/10.1144/qjegh2016-116
ISSN: 1470-9236
Publisher: Geological Society
Start Page: 23
End Page: 30
Journal / Book Title: Quarterly Journal of Engineering Geology and Hydrogeology
Volume: 51
Issue: 1
Copyright Statement: © 2018 The Author(s). Published by The Geological Society of London. All rights reserved. For permissions: http://www.geolsoc.org.uk/permissions. Publishing disclaimer: www.geolsoc.org.uk/pub_ethics
Keywords: Science & Technology
Technology
Physical Sciences
Engineering, Geological
Geosciences, Multidisciplinary
Engineering
Geology
0406 Physical Geography And Environmental Geoscience
0905 Civil Engineering
Geological & Geomatics Engineering
Publication Status: Published
Appears in Collections:Civil and Environmental Engineering
Geotechnics
Faculty of Engineering