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Tunnelling completed on London Power Tunnels
03 October, 2023
National Grid’s £1bn (US$1.2bn) London Power Tunnels (LPT) project has achieved a major milestone with its final tunnelling breakthrough at Eltham substation in Greenwich, south-east London.
Extending Access Possibilities
26 September, 2023
Preassembled, needing only a small footprint and able to self-extend during shaft sinking as well as remain for permanent use afterward, XL Industries’ XE5 mechanised access lift system has worked on some major tunnel projects
Geopolymer concrete in tunnelling
24 July, 2023
At the monthly BTS meeting at the Institution of Civil Engineers, in London, in March 2023, John Day, Chief Technical Officer of Wagners EFC Pty Ltd, Charles Allen, Director of OTB Concrete, and Richard Sutherden, Engineering Director with Murphy for the HMJV (Hochtief- Murphy Joint Venture) provided perspectives on the use and future potential of geopolymer concretes, and the Earth Friendly Concrete in particular, in underground applications
National Grid completes record pour of cement-free concrete
11 May, 2023
National Grid and its contractor Hochtief-Murphy Joint Venture (HMJV) have completed the world’s largest continuous pour of Earth Friendly Concrete at London Power Tunnels.
Calgary appoints BTC as Green Line development partner
05 May, 2023
Canada and Hochtief subsidiary Flatiron Constructors Canada, has been selected as the development partner to deliver Phase One of Calgary’s Green Line LRT project.
Penultimate breakthrough on London Power Tunnels
28 April, 2023
The Hochtief-Murphy JV achieved the fourth breakthrough on Phase 2 of the London Power Tunnels (LPT) project this week.
Challenges and successes
27 March, 2023
A brief snapshot sample of large and small utility tunnelling challenges and successes across the globe over recent months
London Power Tunnels completes first underwater breakthrough
14 March, 2023
A TBM working on National Grid’s London Power Tunnels (LPT) has completed its drive in a flooded shaft in south-east London.
National Grid seeks planning approval for Wiltshire tunnel
06 March, 2023
National Grid plans to replace 4.6km of overhead electricity line and 13 pylons with underground cable in Wiltshire.
Lower Thames Crossing plans accepted for review
29 November, 2022
The Lower Thames Crossing has moved a step closer with the Planning Inspectorate accepting National Highway’s application for a Development Consent Order.
National Highways resubmits application for UK’s longest road tunnel
08 November, 2022
National Highways has resubmitted its Development Consent Order (DCO) application for the Lower Thames Crossing.
ITA president to give keynote at BTS Conference
27 September, 2022
Newly-elected ITA president Arnold Dix will be a keynote speaker at the BTS Conference and Exhibition in London on October 11-12.
Keeping hold of the natural balance
24 June, 2022
Careful groundwater management was vital to build Copenhagen’s metro and, elsewhere, dewatering is taking on more tunnelling challenges. Report by Patrick Reynolds
London power project completes first drive
24 June, 2022
National Grid’s London Power Tunnels (LPT) project completed the first of five drives this week.
Lower Thames Crossing bidders start dialogue
27 April, 2022
National Highways has invited the three shortlisted bidders for the £2.3bn Lower Thames Crossing tunnelling contract to participate in “dialogue” on how to deliver the scheme.
Tunnel to restore snowdonian landscape
22 April, 2022
An area of outstanding natural beauty, Snowdonia is scarred by unsightly pylons and overhead high-voltage cables. They will now be removed and placed in a new tunnel that forms part of a visual improvement project. Julian Champkin reports
Necessity fosters innovation
17 March, 2022
Whether for large- or small-diameter tunnels, utility investment calls for more underground methods, ushering in several innovative techniques in the process. Patrick Reynolds reports
Lower Thames Crossing to be "greenest road ever built in the UK"
25 February, 2022
The Lower Thames Crossing has been designated a ‘pathfinder’ project to explore carbon neutral construction as part of National Highways’ efforts to make the new crossing the greenest road ever built in the UK.
Hochtief to build National Grid’s Snowdonia tunnel
08 February, 2022
Hochtief UK has been awarded a £207m (US$280m) power supply tunnel project by National Grid in Wales.
Tunnelling begins on London Power Tunnels Phase 2
06 July, 2021
Tunnelling has started on the second phase (LPT2) of National Grid’s £1bn (US$1.38bn) London Power Tunnels project as TBM Edith installs the first segment rings at the New Cross site, south of the River Thames.