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Half of HS2 Chiltern Tunnel cross-passage mining complete
23 November, 2023
Mining has been completed on half of the cross-passages for HS2’s longest tunnels.
Tunnelling passes 75% mark on HS2’s longest tunnels
08 August, 2023
The two TBMs digging HS2’s longest tunnels have reached the Little Missenden ventilation shaft, completing more than 75% of the 16km drive under the Chilterns.
Conservation body seeks reassurance following HS2 sinkhole
18 May, 2023
The Chilterns Conservation Board (CCB) says it has warned for many years that the unstable nature of fractured chalk meant HS2 tunnelling operations might lead to long-term permanent damage in the area.
Hole appears above HS2 Chiltern Tunnel
15 May, 2023
Investigations are under way after a surface hole appeared above an HS2 tunnel in Buckinghamshire on Saturday.
HS2 reveals design for last key structure for Chiltern Tunnel
23 March, 2023
HS2 has revealed the final designs for the North Portal of the Chiltern Tunnel – the last of seven key structures for the high-speed rail project’s underground stretch.
HS2 TBMs pass Amersham shaft
03 March, 2023
The two TBMs digging HS2’s longest tunnels have completed more than half of their 16.1km drive.
TBMs reach halfway on HS2’s longest tunnels
02 February, 2023
The two TBMs excavating HS2’s longest tunnels have passed the halfway point on their 16km journey under the Chilterns.
Taking steps to speed forward
23 January, 2023
Herrenknecht has won a major award for its new TBM continuous tunnelling system, has other advanced systems in operation, and is also developing automation for segment production
HS2 partners with Build UK for Open Doors 2023
11 January, 2023
HS2 is partnering with Build UK, an organisation representing more than 40% of the UK construction industry, to support the Open Doors 2023 programme.
HS2 exceeds diesel-free site target
07 December, 2022
HS2 is now operating 10 diesel-free sites, exceeding the project’s original target of one diesel-free site in 2022.
26 September, 2022
Extensive tunnelling on HS2 also features major shaft construction works at many locations
HS2 completes first cross tunnel passages
23 August, 2022
The first of 38 cross passages on HS2’s longest tunnels has been completed.
Going green at high-speed
03 August, 2022
Concrete use on UK’s HS2 rail project is speeding advances in construction sustainability. Report by Patrick Reynolds
Laing O’Rourke to design and build HS2 Interchange Station in Solihull
13 July, 2022
The contractor has won the £370m contract ahead of Unity (a joint venture between Sir Robert McAlpine, VolkerFitzpatrick and WSP) and Skanska, who were named alongside Laing on the shortlist last year.
HS2 reveals new designs for Amersham vent shaft headhouse
05 July, 2022
HS2 has updated designs for the Amersham vent shaft headhouse – one of five structures that will provide ventilation and emergency access to the high-speed rail line’s 10 mile-long Chiltern tunnel.
HS2 unveils noise-cancelling Chiltern Tunnel north portal design
24 March, 2022
HS2 has revealed the designs for the north portal of the Chiltern Tunnel, which will cut noise from trains entering and exiting the tunnel.
HS2 TBMs complete first stage in Chilterns
15 March, 2022
The two 2,000t TBMs digging the UK’s HS2 high-speed rail tunnels under the Chilterns have completed the first stage, up to the ventilation shaft at Chalfont St Peter.
Florence and Cecilia set off
27 July, 2021
HS2 is the largest transport infrastructure project in Europe. Julian Champkin had a lightening tour of the Chiltern Tunnel portal to see the first of the ten TBMs that will work on the project’s 51km twin-tunnels
Work well underway on first HS2 shaft
22 July, 2021
Engineers working on the UK’s new high-speed railway (HS2) have begun excavating the first of five ventilation and emergency access shafts for the 16km-long tunnels being bored under the Chiltern Hills.
HS2 launches second Chiltern Tunnel TBM
02 July, 2021
Following the recent launch of TBM Florence to excavate the first tube of the 16km-long Chiltern Tunnels, HS2 has now launched the second machine, Cecilia, from the South Portal site northwest of London.