Crossrail tunneling complete
 

So reports BBC:
http://www.bbc.co.uk/news/uk-england-london-33002819

"Tunnelling work in London has been completed in the £14.8bn Crossrail
scheme.
Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

Crossrail tunneling complete
 

In message , at 09:43:10 on Thu, 4 Jun 2015,
Jim Chisholm remarked:

Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

That's the new tunnels, plus the exciting machines which re-did the
kilometre of Connaught tunnel.
--
Roland Perry

Crossrail tunneling complete
 

On 04/06/2015 10:06, Roland Perry wrote:
In message , at 09:43:10 on Thu, 4 Jun 2015,
Jim Chisholm remarked:

Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

That's the new tunnels, plus the exciting machines which re-did the
kilometre of Connaught tunnel.
And isn't it a shame that these boring machines and their expert
workforce cannot now move directly to start CROSSRAIL2?

Crossrail tunneling complete
 

On Thu, 04 Jun 2015 11:00:36 +0100, Jim Chisholm
wrote:

On 04/06/2015 10:06, Roland Perry wrote:
In message , at 09:43:10 on Thu, 4 Jun 2015,
Jim Chisholm remarked:

Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

That's the new tunnels, plus the exciting machines which re-did the
kilometre of Connaught tunnel.
And isn't it a shame that these boring machines and their expert
workforce cannot now move directly to start CROSSRAIL2?

Yes, but HS2 may need the workforce in between. The HS2 tunnels will
be bigger, so not the same TBMs.

Crossrail tunneling complete
 

In message , at 11:00:36 on Thu, 4 Jun 2015,
Jim Chisholm remarked:
Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

That's the new tunnels, plus the exciting machines which re-did the
kilometre of Connaught tunnel.
And isn't it a shame that these boring machines and their expert
workforce cannot now move directly to start CROSSRAIL2?

Not really, much of them will be worn out, and it's a real issue getting
them out of the ground. They'll salvage any useful bits they can for the
manufacturer to reuse wherever the next *funded* project is about the
start tunnelling (which isn't Crossrail 2).
--
Roland Perry

Crossrail tunneling complete
 

On Thu, 04 Jun 2015 11:52:55 +0100
Recliner wrote:
On Thu, 04 Jun 2015 11:00:36 +0100, Jim Chisholm
wrote:

On 04/06/2015 10:06, Roland Perry wrote:
In message , at 09:43:10 on Thu, 4 Jun 2015,
Jim Chisholm remarked:

Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

That's the new tunnels, plus the exciting machines which re-did the
kilometre of Connaught tunnel.
And isn't it a shame that these boring machines and their expert
workforce cannot now move directly to start CROSSRAIL2?

Yes, but HS2 may need the workforce in between. The HS2 tunnels will
be bigger, so not the same TBMs.

I thought the crossrail tunnels were also being built to UIC gauge?

--
Spud

Crossrail tunneling complete
 

On Thu, 4 Jun 2015 11:22:28 +0000 (UTC), d
wrote:

On Thu, 04 Jun 2015 11:52:55 +0100
Recliner wrote:
On Thu, 04 Jun 2015 11:00:36 +0100, Jim Chisholm
wrote:

On 04/06/2015 10:06, Roland Perry wrote:
In message , at 09:43:10 on Thu, 4 Jun 2015,
Jim Chisholm remarked:

Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

That's the new tunnels, plus the exciting machines which re-did the
kilometre of Connaught tunnel.
And isn't it a shame that these boring machines and their expert
workforce cannot now move directly to start CROSSRAIL2?

Yes, but HS2 may need the workforce in between. The HS2 tunnels will
be bigger, so not the same TBMs.

I thought the crossrail tunnels were also being built to UIC gauge?

No, I don't think so. There would be no point.

Crossrail tunneling complete
 

Roland Perry wrote:

Not really, much of them will be worn out, and it's a real issue getting
them out of the ground.

Surprised they didn't just leave them like they did with the Chunnel TBMs.

Crossrail tunneling complete
 

On Thu, 4 Jun 2015 12:15:41 +0100, Roland Perry wrote:
Not really, much of them will be worn out, and it's a real issue getting
them out of the ground. They'll salvage any useful bits they can for the
manufacturer to reuse wherever the next *funded* project is about the
start tunnelling (which isn't Crossrail 2).

Is a TBM left buried in the ground subject to Landfill Tax?

Crossrail tunneling complete
 

Arthur Conan Doyle wrote:
Roland Perry wrote:

Not really, much of them will be worn out, and it's a real issue getting
them out of the ground.

Surprised they didn't just leave them like they did with the Chunnel TBMs.

I think one cutter head has been abandoned at Farringdon (discussed at
length here a few months ago). The rest have been extricated and, I
believe, returned to Germany for refurbishment. I don't know how much of
these well-used, huge machines can be re-used.

Crossrail tunneling complete
 

On 2015\06\04 12:15, Roland Perry wrote:
In message , at 11:00:36 on Thu, 4 Jun
2015, Jim Chisholm remarked:
Eight boring machines have been cutting their way through earth
to create 26 miles (42km) of tunnels."

That's the new tunnels, plus the exciting machines which re-did
the kilometre of Connaught tunnel.
And isn't it a shame that these boring machines and their expert
workforce cannot now move directly to start CROSSRAIL2?

Not really, much of them will be worn out, and it's a real issue
getting them out of the ground.

No, they could have just drilled inward to Tottenham Court Road, turned
left and descended and then carried on to do Crossrail 2. The links
between the east and west halves would be dug by hand, and eventually
the links between the north and south halves of Crossrail 2 would be dug
by hand as well. Not really a serious suggestion!

Crossrail tunneling complete
 

On 04/06/2015 09:43, Jim Chisholm wrote:
So reports BBC:
http://www.bbc.co.uk/news/uk-england-london-33002819

"Tunnelling work in London has been completed in the £14.8bn Crossrail
scheme.
Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."


AFAIAA, there haven't been any tunnelling mishaps, which is perhaps
worthy of note and acclaim.

Crossrail tunneling complete
 

Mizter T wrote:
On 04/06/2015 09:43, Jim Chisholm wrote:
So reports BBC:
http://www.bbc.co.uk/news/uk-england-london-33002819

"Tunnelling work in London has been completed in the £14.8bn Crossrail
scheme.
Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."


AFAIAA, there haven't been any tunnelling mishaps, which is perhaps
worthy of note and acclaim.

Yes, that's true, though there was one fatality.

Crossrail tunneling complete
 

In message , at 15:58:38 on Thu, 4 Jun 2015,
Mizter T remarked:
"Tunnelling work in London has been completed in the £14.8bn Crossrail
scheme.
Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

AFAIAA, there haven't been any tunnelling mishaps, which is perhaps
worthy of note and acclaim.

Only this one: http://www.bbc.co.uk/news/uk-england-london-31592092
--
Roland Perry

Crossrail tunneling complete
 

On 04/06/2015 16:02, Recliner wrote:

Mizter T wrote:
[...]
http://www.bbc.co.uk/news/uk-england-london-33002819

"Tunnelling work in London has been completed in the £14.8bn Crossrail
scheme.
Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

AFAIAA, there haven't been any tunnelling mishaps, which is perhaps
worthy of note and acclaim.

Yes, that's true, though there was one fatality.


Yes, that mustn't be forgotten.

Crossrail tunneling complete
 

On 2015\06\04 15:58, Mizter T wrote:

On 04/06/2015 09:43, Jim Chisholm wrote:
So reports BBC:
http://www.bbc.co.uk/news/uk-england-london-33002819

"Tunnelling work in London has been completed in the £14.8bn Crossrail
scheme.
Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."


AFAIAA, there haven't been any tunnelling mishaps, which is perhaps
worthy of note and acclaim.

What would a "tunnelling mishap" be? I remember the NATM problem at
Heathrow, but that was surely a rare incident.

Crossrail tunneling complete
 

On 04/06/2015 16:14, Basil Jet wrote:

On 2015\06\04 15:58, Mizter T wrote:

On 04/06/2015 09:43, Jim Chisholm wrote:
So reports BBC:
http://www.bbc.co.uk/news/uk-england-london-33002819

"Tunnelling work in London has been completed in the £14.8bn Crossrail
scheme.
Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."


AFAIAA, there haven't been any tunnelling mishaps, which is perhaps
worthy of note and acclaim.

What would a "tunnelling mishap" be? I remember the NATM problem at
Heathrow, but that was surely a rare incident.


There was a significant tunnelling collapse in Stratford during the
boring for the CTRL tunnels.

Were there not some issues with 'Big Ben' leaning over a bit too much
during the JLE construction and needing extra underpinning?

Also I've read something about some urgent phone calls being made from
King's College at Aldwych to LT because of some ground movement when the
original Jubilee line was being bored (of course that stretch was never
used in the end).

Crossrail tunneling complete
 

On 04/06/2015 16:40, Mizter T wrote:

On 04/06/2015 16:14, Basil Jet wrote:

What would a "tunnelling mishap" be? I remember the NATM problem at
Heathrow, but that was surely a rare incident.


There was a significant tunnelling collapse in Stratford during the
boring for the CTRL tunnels.

Were there not some issues with 'Big Ben' leaning over a bit too much
during the JLE construction and needing extra underpinning?

Also I've read something about some urgent phone calls being made from
King's College at Aldwych to LT because of some ground movement when the
original Jubilee line was being bored (of course that stretch was never
used in the end).

A few years ago a tram tunnel project in Cologne ate a nearby library.

--
Arthur Figgis Surrey, UK

Crossrail tunneling complete
 

In message , at
17:49:41 on Thu, 4 Jun 2015, Arthur Figgis
remarked:
Also I've read something about some urgent phone calls being made from
King's College at Aldwych to LT because of some ground movement when the
original Jubilee line was being bored (of course that stretch was never
used in the end).

A few years ago a tram tunnel project in Cologne ate a nearby library.

HS1 ate someone's back garden in the Stratford area.
--
Roland Perry

Crossrail tunneling complete
 

On 04/06/2015 20:17, Roland Perry wrote:

In message , at
17:49:41 on Thu, 4 Jun 2015, Arthur Figgis
remarked:
Also I've read something about some urgent phone calls being made from
King's College at Aldwych to LT because of some ground movement when the
original Jubilee line was being bored (of course that stretch was never
used in the end).

A few years ago a tram tunnel project in Cologne ate a nearby library.

HS1 ate someone's back garden in the Stratford area.

Which is just wot I said in my earlier post!

Crossrail tunneling complete
 

In message , at 20:24:40 on Thu, 4 Jun 2015,
Mizter T remarked:

HS1 ate someone's back garden in the Stratford area.

Which is just wot I said in my earlier post!

Ah. Yes. But "tunnelling collapse" doesn't always produce a sink hole.
The Crossrail one for example.

But there was another in the middle of Heathrow when they were building
HEx (with the same sort of sprayed concrete design as Crossrail).
--
Roland Perry

Crossrail tunneling complete
 

In article lmk0na91dm9c3804bigkkk88tfk5i5s09l@None,
(Arthur Conan Doyle) wrote:

Roland Perry wrote:

Not really, much of them will be worn out, and it's a real issue getting
them out of the ground.

Surprised they didn't just leave them like they did with the Chunnel
TBMs.

The two that have recently arrived at Farringdon will be buried there.

--
Colin Rosenstiel

Crossrail tunneling complete
 

In article , (Roland
Perry) wrote:

In message , at 20:24:40 on Thu, 4 Jun
2015, Mizter T remarked:

HS1 ate someone's back garden in the Stratford area.

Which is just wot I said in my earlier post!

Ah. Yes. But "tunnelling collapse" doesn't always produce a sink
hole. The Crossrail one for example.

But there was another in the middle of Heathrow when they were
building HEx (with the same sort of sprayed concrete design as
Crossrail).

That was the aforementioned NATM incident.

--
Colin Rosenstiel

Crossrail tunneling complete
 

wrote:
In article lmk0na91dm9c3804bigkkk88tfk5i5s09l@None,
(Arthur Conan Doyle) wrote:

Roland Perry wrote:

Not really, much of them will be worn out, and it's a real issue getting
them out of the ground.

Surprised they didn't just leave them like they did with the Chunnel
TBMs.

The two that have recently arrived at Farringdon will be buried there.

Actually, I thought these would be removed; it's the earlier one(s) that
were left there. It's easy to remove TBMs that emerge into a large station
tunnel, but difficult to remove the cutter head that first cuts that
tunnel. Instead, it's easier to steer it sideways, abandon the cutter head,
but dismantle and remove the long mobile tunnel 'factory' behind it.

Crossrail tunneling complete
 

On 04/06/2015 20:39, Roland Perry wrote:
In message , at 20:24:40 on Thu, 4 Jun 2015,
Mizter T remarked:

HS1 ate someone's back garden in the Stratford area.

Which is just wot I said in my earlier post!

Ah. Yes. But "tunnelling collapse" doesn't always produce a sink hole.
The Crossrail one for example.

But there was another in the middle of Heathrow when they were building
HEx (with the same sort of sprayed concrete design as Crossrail).

There's a hole in my bucket...

--
Arthur Figgis Surrey, UK