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!

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.

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.

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

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.

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.

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).

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

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

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!