The two tunnel boring machines (TBMs) delivering the longest tunnels on the High Speed 2 (HS2) railway have passed the three quarters mark.
TBMs Florence and Cecilia have completed over 12km of the 16km Chiltern twin-bore tunnels, passing the fourth of five ventilation and emergency access shafts, 800m from the village…
Work on High Speed 2’s Euston Tunnel construction might have halted, but the construction of the other twin bore tunnels for the project is progressing despite ground condition challenges.
High Speed 2 (HS2) tunnelling activity between London and the West Midlands is continuing despite the government’s decision to halt work on…
The week before NCE interviewed HS2 Ltd head of innovation Howard Mitchell, the government announced it was delaying parts of the High Speed 2 (HS2) project.
It said that the leg between Birmingham and Crewe along with work associated with the Euston Station terminus would be pushed back. Several industry heavyweights…
High Speed 2 (HS2) and Align JV have revealed the designs for the north portal of the Chiltern Tunnel.
This is the final portal to be designed and the last of seven key structures for HS2’s longest tunnels. The design features two perforated concrete hoods that will cover the track, extending…
Both tunnel boring machines (TBMs) being used to drive the 16km long tunnels through the Chilterns for High Speed 2 (HS2) have just passed the halfway point on their journeys towards the north portals at South Heath in Buckinghamshire.
The Herrenknecht TBMs – named Florence and Cecilia – were the first…
HS2 engineers from Align JV (Bouygues, VolkerFitzpatrick, Sir Robert McAlpine) are approaching halfway on the first module of the Colne Valley Viaduct, which has featured the team working through 60 nights to avoid disruption to the local roads.
HS2 Phase 1 will see the construction of more than 500 bridging structures,…
With the switching on of Dominique, the 700t bridge building machine known as a launch girder, HS2 engineers began putting in place the 1,000 unique pre-cast elements that will make up the 3.4km Colne Valley Viaduct, which will soon be the longest railway bridge in the UK.
The viaduct construction is…
Work has begun on HS2’s first and longest viaduct, the Colne Valley Viaduct, with the powering up of the 700t bridge building machine.
At 3.4km, the Colne Valley Viaduct will be the longest railway bridge in the UK. It will cross a series of lakes and waterways between Hillingdon and the…
HS2 Ltd has won planning permission for the landscaping and headhouses for its ventilation shaft in Little Missenden, Buckinghamshire.
The installation of the shafts and headhouse compound will require much landscaping and green space to minimise its impact on the natural environment. The original plan for the section of land was…
High Speed 2 (HS2) contractors have admitted leaking 1,500m3 of bentonite slurry into a chalk aquifer that traditionally carries water eventually supplied to Londoners – as the Environment Agency faces a legal challenge over its approval of the works.
The Align join venture – formed of Bouygues Travaux Publics, Sir Robert…
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