HS2 Ltd has signed a contract with main works civils contractor Skanka Costain STRAVAG JV (SCS JV) for the first two tunnel boring machines to start on the HS2 project.
The 13-mile twin-bore London tunnel between Euston and West Ruislip will be bored by six TBMs in total. These first two will work their way eastwards from West Ruislip, creating the Northolt tunnel west. Both machines will tunnel five miles and eventually meet the two TBMs tunnelling westwards from Old Oak Common. They will be extracted at that point – Green Park Way in Greenford – and the site will then be made into a vent shaft.
German TBM manufacturer Herrenknecht is producing the TBMs and will deliver them by the end of 2021. They will be assembled and begin their tunnelling work in mid-2022. They will be active for 22 months and complete their section in 2024. They are being designed specifically to tunnel through London’s clay and chalk.
HS2 will have 32km of tunnels – 64km in total length due to their twin-bore nature. A total of ten TBMs will deliver them. The London tunnels will start at HS2’s London terminus at Euston and continue for 4.5 miles before the railway line surfaces at Old Oak Common in West London.
“HS2's London tunnels will help ensure many homes and habitants in the capital remain undisturbed. This is a key part of our commitment to deliver Britain's new high speed railway in the most environmentally-friendly way and minimising disruption to our neighbours.
“Building HS2 will showcase Britain's world class capabilities in tunnelling. The procurement of these incredible machines is an exciting step towards the construction of the London tunnels, which will involve them working 24 hours a day, seven days a week.”
Each tunnel boring machine will be 140m long with a cutter head measuring 9.84m in diameter and weighing 2,050 tons. They will excavate 1.2 million cubic metres, weighing 2.46 million tons.
“Work is already underway to prepare for the first tunnel launch in 2022. Throughout these and all our activities we are committed to involving local communities and stakeholders and supporting social development and employment through the 4,500 jobs that will be created.”
HS2 Ltd still has to commission the remaining TBMs that will work on the project.
HS2 has commenced work on the thirty-eight cross passages that will link the northbound and southbound Chiltern tunnels.
Dorothy, HS2’s 2000-tonne tunnel boring machine, has made its first breakthrough on the UK's high-speed rail line from London to Birmingham.
HS2 Ltd has contracted Laing O’Rourke to build the HS2 Interchange Station in Solihull at the heart of the high-speed rail network.
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Birmingham City Council has granted planning permission to HS2 Ltd to construct two viaducts in Birmingham.
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HS2 has reached an agreement to purchase Square One on Travis Street, Manchester from property provider Bruntwood.
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HS2 has unveiled updated environmentally-friendly designs for the Cubbington, Warwickshire section of the new high speed line.
HS2 has unveiled the final designs for the Thame Valley Viaduct, which will cross the River Thame’s flood plain near Aylesbury.
HS2 has unveiled designs for Chiltern Tunnel’s north portal, which focus on cutting noise from trains as they enter and exit the tunnel.
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The two tunnel boring machines digging the HS2 twin tunnels under the Chilterns have reached the ventilation shaft at Chalfont St Peter.
HS2 has shared updated designs for its high speed railway terminus station at London Euston, which will be set across three levels.
The Mace and Dragados joint venture (MD JV) – HS2’s construction partner for Euston station – is ramping up procurement this month.
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HS2 has signed the Rail Supply Group’s Work Pipeline Visibility Charter and will share its rail systems' technical specifications publicly.
The ‘High Speed Rail (Crewe-Manchester) Bill’ – HS2 Phase 2b Western Leg – will be introduced in parliament today (24 January 2022).
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HS2 archaeologists have excavated a vast roman settlement in Northamptonshire - one of over 100 sites HS2 has examined since 2018.
HS2 has published its Net Zero Carbon Plan, which sets out how it plans to make the project net zero carbon from 2035.
HS2 has revealed the first images of its 1.5 mile-long Greatworth tunnel - one of three ‘green tunnels’ to be built in Bucks and Notts.
Balfour Beatty VINCI (BBV) has launched a recruitment drive to support HS2 construction works planned for 2022 and beyond.
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The first of 56 giant concrete piers for the Colne Valley Viaduct has been cast. Once complete, this will be the UK's longest rail bridge.
The contract to design, build and maintain the HS2 rolling stock fleet for Phase 1 London-Birmingham has gone to the Hitachi Rail-Alstom JV.
The first tunnel boring machine working on HS2 in the Midlands launched on 2 December, excavating a one-mile tunnel in Warwickshire.
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Work on HS2’s Old Oak Common 850-metre-long station box has begun. The reinforced concrete structure will form the station's frame and base.
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HS2 has published a shortlist of bidders for the Phase 2a Design and Delivery Partner contract. The winner will be announced next summer.
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HS2 tunnel boring machine ‘Florence’ has passed the one mile mark, cutting through a mix of chalk and flint beneath the Chiltern hills.
HS2 has invited six bidders to tender for a major two-part enabling works contract for its recently approved Phase 2a section.
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HS2 Ltd has published revised images of the Adelaide Road headhouse in Camden, after changes were made to the design.
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The companies shortlisted to build HS2's Interchange Station in Solihull have been named by HS2 Ltd. The contract is to be awarded in 2022.
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SCS JV has signed the first of two contracts for the production of tunnel segments that will be used to construct HS2’s London tunnels.
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Excavation of the vent shaft at Chalfont St Peter has begun in Buckinghamshire. It is the first of five on the HS2 Chiltern tunnels section.
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HS2 has begun its search for a team of specialist ground investigation contractors for the western leg of Phase 2b from Crewe to Manchester.
HS2 has launched Cecilia, the second of two 2,000t tunnelling machines that will excavate ten-mile-long tunnels beneath the Chiltern Hills.
Permanent works on HS2's Old Oak Common station have got under way today with phase 1 seeing the construction of a 750,000m3 underground box.
HS2 has obtained approval for a scheme that will use excavated material to create new chalk grassland, woodland, wood pasture and wetland.
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HS2 has deployed the first of 10 tunnel boring machines (TBMs) that will be used during phase one of the UK’s new high speed railway.
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HS2 Ltd has published its shortlist of companies it has asked to tender for the high-speed railway's high-voltage power supply systems.
HS2 has cast the first of 112,000 wall segments for the high-speed railway's 10-mile Chiltern tunnel outside of London.
Work has begun on what will be the UK's longest rail viaduct – the Colne Valley Viaduct to the northwest of London, measuring 3.4km.
HS2 will use retired wind turbine blades originally destined for the incinerator to make reinforced concrete that is carbon-friendly.
HS2 Ltd has started its search for a specialist contractor to deliver the high-speed railway's engineering management system (EMS).
Following the formal handover of the Heathrow Express depot to Network Rail, NR will begin its decommissioning work in preparation for HS2.
Collins Earthworks has completed the preparation of the HS2 site in Warwickshire in readiness for tunnelling to start this summer.
HS2 Ltd has started its search for a contractor to build the rolling stock depot and control centre at Washwood Heath in Birmingham.
HS2 Ltd has revealed the design of the Euston tunnel headhouse that will sit alongside the West Coast Main Line in London.
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HS2 Ltd has published the updated designs for the Canterbury Works vent shaft headhouse, which will sit above the Euston tunnel in London.
HS2 Ltd has unveiled the design of two viaducts in Northamptonshire as a four-week consultation period for local residents gets underway.
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HS2 Ltd has launched a public consultation on proposed changes the Phase 2b of the high-speed rail project, including additional platforms.
HS2 Ltd has today (4 Sep 2020) announced the formal start of construction on the high-speed railway line, a major milestone for the project.
Solihull Council has awarded planning permission for the HS2 Interchange Station, the surrounding landscaping and the automated people mover.
HS2 Ltd has revealed the design for the vent shaft headhouse at Amersham, one of five such structures along the Chiltern tunnel.
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HS2 Ltd has launched part two of its Innovation Accelerator following a large number of applications in part one.
HS2 Ltd has revealed the first images and names of the two TBMs that will create the tunnel through the Chilterns: Florence and Cecilia.
HS2 Ltd has begun its search for the contractor to deliver the high-voltage power supply systems, traction and non-traction, for the line.
HS2's Old Oak Common site has been handed over to contractors Balfour Beatty VINCI SYSTRA, who won the contract to build the station in 2019.
HS2: the Chiltern Tunnel south portal site has now been fully levelled and the 17m headwall is now complete in preparation for the TBMs.
HS2 has revealed its final design for the first of four vent shaft headhouses for the Chiltern tunnel. This one is at Chalfont St Peter.
HS2 joint venture Mace Dragados has taken possession of the Euston Station construction site, preparing for the start of construction.
HS2 Ltd has started its search for overhead catenary system suppliers in preparation of awarding the £300m contract in 2022.
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HS2: The preparatory works at Euston station have reached a milestone with the demolition of the western ramp and canopy complete.
HS2 Ltd has revealed the construction companies that are shortlisted to tender for the Birmingham Curzon Street station build.
HS2 Ltd has launched its search for its operational telecoms supplier for Phase 1 and 2a of the high-speed line between London and Crewe.
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