On Thursday, August 3, 2017 at 2:06:46 PM UTC+5:30, wrote:

As an aside, how do trains on the ECML get south of the river, where's the
link to the current thameslink route?


Trains from the north either terminate at King's Cross or go to a through
station under St Pancras. To reach the latter, a tunnel was burrowed under
the canal to the north of St Pancras. When I checked a few months back,
the tunnel wouldn't be pressed into service for at least a year.

Ding Bat wrote:
On Thursday, August 3, 2017 at 2:06:46 PM UTC+5:30, wrote:

As an aside, how do trains on the ECML get south of the river, where's the
link to the current thameslink route?


Trains from the north either terminate at King's Cross or go to a through
station under St Pancras. To reach the latter, a tunnel was burrowed under
the canal to the north of St Pancras.

The two Canal Tunnels, actually, built over a decade ago.

When I checked a few months back,
the tunnel wouldn't be pressed into service for at least a year.

Yes, they will finally go into passenger service next year, but as Roland
showed, the tunnels are already being used for ECS movements. It's on the
Thameslink for all, even Spud, to see:
http://www.thameslinkprogramme.co.uk.../canal-tunnels

On Sunday, August 6, 2017 at 4:29:45 PM UTC+5:30, Recliner wrote:
Ding Bat wrote:
On Thursday, August 3, 2017 at 2:06:46 PM UTC+5:30, wrote:

As an aside, how do trains on the ECML get south of the river, where's the
link to the current thameslink route?


Trains from the north either terminate at King's Cross or go to a through
station under St Pancras. To reach the latter, a tunnel was burrowed under
the canal to the north of St Pancras.

The two Canal Tunnels, actually, built over a decade ago.

They're unfortunately named. A canal tunnel used to be for waterborne vessels.
https://en.wikipedia.org/wiki/List_o...United_Kingdom

I was referring to the one for north to south traffic;
obviously, there's another for the other direction.

When I checked a few months back,
the tunnel wouldn't be pressed into service for at least a year.

Yes, they will finally go into passenger service next year, but as Roland
showed, the tunnels are already being used for ECS movements. It's on the
Thameslink for all, even Spud, to see:
http://www.thameslinkprogramme.co.uk.../canal-tunnels

Ding Bat wrote:
On Sunday, August 6, 2017 at 4:29:45 PM UTC+5:30, Recliner wrote:
Ding Bat wrote:
On Thursday, August 3, 2017 at 2:06:46 PM UTC+5:30, wrote:

As an aside, how do trains on the ECML get south of the river, where's the
link to the current thameslink route?


Trains from the north either terminate at King's Cross or go to a through
station under St Pancras. To reach the latter, a tunnel was burrowed under
the canal to the north of St Pancras.

The two Canal Tunnels, actually, built over a decade ago.

They're unfortunately named. A canal tunnel used to be for waterborne vessels.
https://en.wikipedia.org/wiki/List_o...United_Kingdom

I agree, and it's also a rather ambiguous name: one that linked it to the
area might have been better (eg, St Pancras tunnels?).


I was referring to the one for north to south traffic;
obviously, there's another for the other direction.

Well, it might have been a double-track tunnel.

On Tuesday, August 8, 2017 at 12:53:09 PM UTC+5:30, Recliner wrote:
Ding Bat wrote:
On Sunday, August 6, 2017 at 4:29:45 PM UTC+5:30, Recliner wrote:
Ding Bat wrote:
On Thursday, August 3, 2017 at 2:06:46 PM UTC+5:30, wrote:

As an aside, how do trains on the ECML get south of the river, where's
the link to the current thameslink route?

Trains from the north either terminate at King's Cross or go to a through
station under St Pancras. To reach the latter, a tunnel was burrowed under
the canal to the north of St Pancras.

The two Canal Tunnels, actually, built over a decade ago.

They're unfortunately named. A canal tunnel used to be for waterborne
vessels.
https://en.wikipedia.org/wiki/List_o...United_Kingdom

I agree, and it's also a rather ambiguous name: one that linked it to the
area might have been better (eg, St Pancras tunnels?).

I was referring to the one for north to south traffic;
obviously, there's another for the other direction.

Well, it might have been a double-track tunnel.

Tunneling today is done with an automated mole having a circular cross section,
so a Paris style semi-circular tunnel for double-track is impracticable.
Where does London have multi-track tunnels? Snow Hill? The route of the
former Circle Line? FWIW, the Canal tunnels' portal is double-track.

On 2017\08\08 10:40, Ding Bat wrote:
Tunneling today is done with an automated mole having a circular cross section,
so a Paris style semi-circular tunnel for double-track is impracticable.
Where does London have multi-track tunnels?

There are numerous between Kings Cross and Potters Bar. I doubt they are
all cut-and-cover.

On Tue, 8 Aug 2017 10:49:50 +0100, Basil Jet
wrote:

On 2017\08\08 10:40, Ding Bat wrote:
Tunneling today is done with an automated mole having a circular cross section,
so a Paris style semi-circular tunnel for double-track is impracticable.
Where does London have multi-track tunnels?

There are numerous between Kings Cross and Potters Bar. I doubt they are
all cut-and-cover.

No, definitely not, but they weren't drilled using TBMs, either. Given
when they were built, I assume they were cut by hand.

On Tue, 8 Aug 2017 02:40:15 -0700 (PDT), Ding Bat
wrote:

On Tuesday, August 8, 2017 at 12:53:09 PM UTC+5:30, Recliner wrote:
Ding Bat wrote:
On Sunday, August 6, 2017 at 4:29:45 PM UTC+5:30, Recliner wrote:
Ding Bat wrote:
On Thursday, August 3, 2017 at 2:06:46 PM UTC+5:30, wrote:

As an aside, how do trains on the ECML get south of the river, where's
the link to the current thameslink route?

Trains from the north either terminate at King's Cross or go to a through
station under St Pancras. To reach the latter, a tunnel was burrowed under
the canal to the north of St Pancras.

The two Canal Tunnels, actually, built over a decade ago.

They're unfortunately named. A canal tunnel used to be for waterborne
vessels.
https://en.wikipedia.org/wiki/List_o...United_Kingdom

I agree, and it's also a rather ambiguous name: one that linked it to the
area might have been better (eg, St Pancras tunnels?).

I was referring to the one for north to south traffic;
obviously, there's another for the other direction.

Well, it might have been a double-track tunnel.

Tunneling today is done with an automated mole having a circular cross section,
so a Paris style semi-circular tunnel for double-track is impracticable.
Where does London have multi-track tunnels? Snow Hill? The route of the
former Circle Line? FWIW, the Canal tunnels' portal is double-track.

That's true of most Tube tunnel portals, as the initial shallow
section is cut and cover. The TBMs only do the deep tunneling.

All of the sub-surface LU line tunnels are cut and cover. That's not
just the Circle line, but the Met line to Finchley Road and the
District line tunnels in East London. The Piccadilly line tunnel to
Hatton Cross is also shallow cut and cover double track. All of the
old mainline railway tunnels are also cut and cover, and usually
double track. Even the Brunel ELL Thames tunnel, though obviously not
cut and cover, is double-track. I've not seen an analysis, but there
must be almost as much double track tunnel in central London as deep
bore single track tube tunnels.

On 2017\08\08 11:54, Recliner wrote:

That's true of most Tube tunnel portals, as the initial shallow
section is cut and cover. The TBMs only do the deep tunneling.

I've just looked at numerous tube portals in Bing Maps using the 45
degree view. The pair of round portals are clearly visible in most. I
have found none which clearly match your description.