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The 2,000 tonne tunnel boring machine Dorothy sets off for second tunnel drive under Long Itchington Wood in Warwickshire. The first one-mile tunnel bore was completed in July this year the first breakthrough on the HS2 project.
(Permalink) HS2 Long Itchington Wood TBM

HS2's first Tunnel Boring Machines (TBMs) excavating HS2s longest tunnels have completed the first 4 miles of their drive from the Chiltern tunnels south portal to the second ventilation shaft at Chalfont St Giles.
(Permalink) Chiltern Tunnels HS2 TBM


Chiltern Tunnels: Tunnel boring machines 'Florence' and 'Cecilia' have reached a 4 mile point at Chalfont St Giles.
HS2 /10/2022

Massive Tunnel Boring Machine (TBM) in Warwickshire becomes first on the HS2 project to complete its full journey undergroundThe first bore of the one-mile tunnel under Long Itchington Wood has been dug in seven months.
(Permalink) HS2 Long Itchington Wood TBM Tunnel

HS2 this week launched 'Cecilia' - the second of two enormous 2,000 tonne tunnelling machines that will excavate the ten mile long tunnels beneath the Chiltern hills just outside London. The first machine “ 'Florence' “ was launched just over a month ago.
(Permalink) Chiltern Tunnel HS2 TBM

HS2 launches 'Florence' the first of 10 HS2 Tunnel Boring Machines (TBMs) that will dig 64 miles of tunnel on Phase One of the UK's new high speed railway. This first 170m-long TBM the largest ever used on a UK rail project will dig 10 miles of tunnel under the Chilterns, operating 24/7 for the next three years.
(Permalink) HS2 TBM

A 10 mile tunnel under the Chilterns will be dug but campaigners say it is 'decimating countryside'.
(Permalink) HS2 TBM

HS2 is preparing for the arrival of its first giant tunnelling machines by completing the 17-metre-high headwall and ground reinforcement at what will become the south portal of the 10-mile long Chiltern tunnel. Led by HS2s main works contractor Align JV - a joint venture formed of three companies: Bouygues Travaux Publics, Sir Robert McAlpine ...
(Permalink) HS2 TBM

Tunnelling work to extend the Northern Line to Battersea started today as the first of two boring machines began its 3.2km tunnelling journey to lengthen the line between Kennington to Battersea.
The two machines, called Helen and Amy, were lowered 20 metres below ground in Battersea back in February, and Helen has started her work moving underneath south London to create the first new tunnel that will extend the Charing Cross branch of the Northern Line from Kennington to Battersea Power Station via Nine Elms.
(Permalink) Northern Line TBM

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