Makes it seem a lot, lot sooner when you put it into an approximate timescale!
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HS2 TBM Progress
- Thread starter LNW-GW Joint
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TBMEngineer
Member
Downline TBM in NTE is now approaching the shaft and we expect breakthrough Friday.
We shall hit the can tonight, with slow progress for the past few shifts due to the foam concrete
We shall hit the can tonight, with slow progress for the past few shifts due to the foam concrete
LNW-GW Joint
Veteran Member
Northolt East TBMs were updated today for May 30 (ie a week ago) for 20 days from May 10.
Emily is at 5516m (+93m), Anne at 5482m (+463m).
So Emily has moved slowly (4.6m/day) towards the exit portal and had 33m left, while Anne has moved quickly (23m/day) and was only 18m short.
Both TBMs are now poised to enter the exit "can" at the Greenford Way shaft, and as has been posted by TBMEngineer, Emily might finish today.
Emily is at 5516m (+93m), Anne at 5482m (+463m).
So Emily has moved slowly (4.6m/day) towards the exit portal and had 33m left, while Anne has moved quickly (23m/day) and was only 18m short.
Both TBMs are now poised to enter the exit "can" at the Greenford Way shaft, and as has been posted by TBMEngineer, Emily might finish today.
Superb.
Any news on what the next project for the TBMs are? Or whether they’re being repurposed for the tunnels for Euston approaches?
Saw recently that one’s already gone (in the process of going) back to Germany.
Euston has new TBMs and most of the parts have been on site for a while. As covered a few pages ago assembly of the Euston TBMs has been paused to prioritise OOC station construction for the time being.
BananaRepublic
Member
- Joined
- 9 Jul 2011
- Messages
- 801
Just to clarify, the Euston tunnels TBM's ‘Karen’ and ‘Madeleine’, are already assembled and in position at the eastern end of the OOC station box, almost ready to start up, once approval had been given to start tunnelling.
There's no information out in the public domain regarding how far the logistics tunnel has been prepared for spoil extraction and other tunnelling support services.
Once the conveyor system from Victoria Road has been dismantled, I expect it will be cut back and linked into the Atlas Road logistics site and the logistics tunnel.
z
TBMEngineer
Member
Officially broke through last night into the shaft and can. A few more rings to push the shield fully into the can.
But Shift A broke through last night.
There will be an official SCS photo. (But they didn’t break through
View attachment 1749235651992.jpeg
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But Shift A broke through last night.
There will be an official SCS photo. (But they didn’t break through
View attachment 1749235651992.jpeg
== Doublepost prevention - post automatically merged: ==
They are taking some bits from Emily back to Germany. Rest is getting scrapped
absolutelymilk
Established Member
- Joined
- 18 Jul 2015
- Messages
- 1,420
Officially broke through last night into the shaft and can. A few more rings to push the shield fully into the can.
But Shift A broke through last night.
There will be an official SCS photo. (But they didn’t break through
Congrats! Great work
TBMEngineer
Member
Thank you!
== Doublepost prevention - post automatically merged: ==
DL TBM is now officially finished.
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erikvd28
Member
And here's Emily! https://mediacentre.hs2.org.uk/news/third-hs2-tunnelling-machine-completes-its-drive-beneath-london
Now it's waiting time for Elizabeth
Now it's waiting time for Elizabeth
LNW-GW Joint
Veteran Member
HS2 are not giving anything away about Anne's completion date - just "the summer", even though it has only 18m to go.
Anne will have to wait until Emily is dismantled and extracted, which might take some time.
Anne will have to wait until Emily is dismantled and extracted, which might take some time.
TBMEngineer
Member
erikvd28
Member
And then, now the extra funding is here, to Euston?
LNW-GW Joint
Veteran Member
We don't know that for certain.
The extra funding might just be gobbled up by cost overruns, like the GW electrification.
TBMEngineer
Member
it is quite up in the air at the moment, there is no 100% confirmed date for the launch, causing a lot of uncertainty for the workforce and engineers, who have a year of doing not much or getting moved to another project. EKFB are also getting lots of instructions to defer works for a year. seems HS2 bank accounts need a big injection, or activity is going to dry up for the best part of a year....
Snow1964
Established Member
New drone video of the area around Northolt tunnel portal.
The segment handling equipment has been removed, and looks like the conveyors are being dismantled
HS2 has also produced a video on Copthall (cut and cover) tunnel, between Northolt and Colne valley viaduct. All the ventilation towers are now built, and landscaping has commenced in the area.
Looking like majority of the earthworks on this section have now been constructed and levelled, ready for trackbed. The videos suggest some noise retaining walls still need to be built, the recent HS2 letter (link) suggests building walls continues to March 2026
The segment handling equipment has been removed, and looks like the conveyors are being dismantled
HS2 has also produced a video on Copthall (cut and cover) tunnel, between Northolt and Colne valley viaduct. All the ventilation towers are now built, and landscaping has commenced in the area.
Looking like majority of the earthworks on this section have now been constructed and levelled, ready for trackbed. The videos suggest some noise retaining walls still need to be built, the recent HS2 letter (link) suggests building walls continues to March 2026
absolutelymilk
Established Member
- Joined
- 18 Jul 2015
- Messages
- 1,420
Mary Ann updated again, 4048m, 1552m to go (16 June)
So 304m in 28 days (10.8m per day)
Backroom_boy
Member
Finished by Christmas?
LNW-GW Joint
Veteran Member
Is it me, or has the HS2 In your Area Map (with TBM location graphics) disappeared?
Snow1964
Established Member
Is this the page you want ?
In your area map
Search our interactive In Your Area Map to find information about current or planned HS2 construction works taking place across the route.
www.hs2.org.uk
LNW-GW Joint
Veteran Member
Yes, that's the one.Is this the page you want ?
In your area map
Search our interactive In Your Area Map to find information about current or planned HS2 construction works taking place across the route.
It has vanished from the In Your Area menu, but can still be accessed using your direct link.
Snow1964
Established Member
New video on completion of Northolt tunnelling, shows various staff members talking about the job done, and their roles, and shows the segment erector in operation, and various parts of the TBM. Mentions although the TBMs are now complete, tunnel still needs to be fitted out.
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Last of Northolt TBMs finished its journey:
mediacentre.hs2.org.uk
Breakthrough! HS2 completes excavation of huge 8.4 mile tunnel under the capital
Excavation of the second longest tunnel on HS2 route between London and the West Midlands has been completed The tunnel was built using four machines, with the final one taking 14 months to complete its drive Work will soon move to the next stage of tunnel construction including the flat tunnel...
erikvd28
Member
So Mary Ann is the last TBM still rolling?
LNW-GW Joint
Veteran Member
It' was rebuilt for Bromford as "Elizabeth".
Still 1.5km to go.
mythnormadman
Member
I thought it was "Dorothy" that was re-used as "Elizabeth"
Definitely states Mary Ann on the HS2 website.
TBMEngineer
Member
Technically we are still 3/4 rings away from final position inside the can.
Which will be us tonight.
LNW-GW Joint
Veteran Member
My misremembering - having a senior moment!
But Mary Ann finished her Bromford drive on May 20, so definitely not rolling.
Elizabeth is the last TBM in production, until the Euston pair start up.
Snow1964
Established Member
A new video short has been posted, doesn't say exactly where it is, but it is alongside the Central line (there is a train going past at one point), so possibly near Greenford. It appears to show construction of a long concrete building, so possibly a tunnel ventilation headhouse, or emergency egress point