Tunnel damage
 

"Nick Leverton" wrote in message
...
In article ,
Robin Mayes wrote:

"Andy & Kim" wrote in message
...
Hi Guy's,
Regarding the recent bombings, does anybody know how badly damaged the
tunnels are and the infrastructure it's self?

Yes

Do you know who knows ? (Educated guesses allowed :-))

News today is the the Circle ought to open within a fortnight.

The Picc is to remain closed for an unspecified (unknown)
time, probably many months.


Nick
--
http://www.leverton.org/ ... So express yourself

Tunnel damage
 

On 19 Jul 2005 05:21:39 -0700, wrote:



Boltar wrote:
Well, at the Saturday press conference two days after the bombing Tim
O'Toole stated that the Piccadilly line tunnel was intact,

Just from what I've seen in the media and by the consequences of the
bombs it seems to me that they weren't all that powerful (otherwise
the carriages would have completely annihalated and no one inside
would have survived) so I suspect damage to the tunnels (which are
built a lot stronger than the trains) is probably limited to damaged
cabling and track.

Cabling can be a problem though. It was on the news a while ago. The
reason the Northern Line took so long to get working last time that had
an accident was that they didn't have any up to date wiring diagrams.
If the Piccadilly line is the same then that could take a while too.

This is correct but removal of the train will have to be done very
carefully to avoid causing even more damage to cables and other parts of
the infrastructure.

Half of the train at KX has been removed to Cockfosters depot while I am
told the Edgware Road carriages were being taken away by low loader
today having been craned out.
--
Paul C


Admits to working for London Underground!

Tunnel damage
 

I just read this from the tube's website on the ask tube section
"Question


When will the Tubes be returning to normal after the events of 7 July?






Answer


We will not be in a position to add to the current level of service on
the Metropolitan, Circle, District and Hammersmith & City lines for a
number of days.

The service on the Piccadilly line will remain suspended between Arnos
Grove and Hyde Park Corner for the foreseeable future.

Following agreement with the Police, the Victoria line is now stopping
at King's Cross/St Pancras. The Northern line will start stopping at
King's Cross/St Pancras again from Monday 17 July."


this text gives the ideia that the suspention is here to stay, what do
you think?

Tunnel damage
 

by the way... if they only have problem with the cables why does circle
will be working soon? does that line don't have cables? (I know it's
not so close to the train, but they're still there, don't they?


Pedro.

Tunnel damage
 

On 19 Jul 2005 12:38:38 -0700, "mtveurope" wrote:

by the way... if they only have problem with the cables why does circle
will be working soon? does that line don't have cables? (I know it's
not so close to the train, but they're still there, don't they?

I have not seen any detailed information but both of the Circle Line
bombs took place in wider tunnels and the trains are of a different
profile to those of the Picc Line. Therefore the outward effect of the
explosions would seem to be less. As there is more space in the sub
surface tunnels then it is possible that there is less cable damage. All
tube lines have a range of cables running alongside to provide
telephone, communication, signalling and power supplies. The amount of
cabling is potentially more complex at junctions and all of the
explosions took place near junctions or crossovers so there is a clear
need to be careful in clearing / cleaning / repairing the sites so that
more damage is not caused in the short run.

There will be important issues to consider in what is restored in what
order to ensure a logical and safe approach is taken, that the
infrastructure is in a resilient state and that the safety regulators
can be confident on behalf of the public that the railway is safe to
reopen. People will naturally be concerned / nervous about travelling
over the bombed sections of line so a fully safe and reliable railway is
needed to provide reassurance to London's tube users.

Although I can be accused of being biased as I work for LU I think the
progress thus far has been very good in trying circumstances. I look
forward to having the railway back and working properly. People need to
be patient even though I can understand why people may be getting
"hacked off" with disrupted journeys and overcrowding.

--
Paul C


Admits to working for London Underground!

Tunnel damage
 

It took almost 1 year to the day for the #1 train to run under the WTC
site.

The other WTC stations World Trade Center on the E & Cortlandt St on
the N R & W are on the outskirts of WTC while the 1train was in the
center of WTC.

Ironically as a life long NYer i was not in NYC on 9/11 but was at
Heathrow
on 7/7.

Tunnel damage
 

"Paul Corfield" wrote in message
...
On 19 Jul 2005 12:38:38 -0700, "mtveurope" wrote:

by the way... if they only have problem with the cables why does circle
will be working soon? does that line don't have cables? (I know it's
not so close to the train, but they're still there, don't they?

I have not seen any detailed information but both of the Circle Line
bombs took place in wider tunnels and the trains are of a different
profile to those of the Picc Line. Therefore the outward effect of the
explosions would seem to be less. As there is more space in the sub
surface tunnels then it is possible that there is less cable damage. All
tube lines have a range of cables running alongside to provide
telephone, communication, signalling and power supplies. The amount of
cabling is potentially more complex at junctions and all of the
explosions took place near junctions or crossovers so there is a clear
need to be careful in clearing / cleaning / repairing the sites so that
more damage is not caused in the short run.

Yes, the cable run suffered from extensive damage. Don't forget that even
once the signalling cables have been replaced, extensive testing needs to be
carried out to ensure the rewiring is done correctly. Luckily, most of
Aldgate was resignalled during the late 1980s so the diagrams should be
available.

Tunnel damage
 

"mtveurope" wrote in message
oups.com...
I just read this from the tube's website on the ask tube section
"Question


When will the Tubes be returning to normal after the events of 7 July?


Answer


We will not be in a position to add to the current level of service on
the Metropolitan, Circle, District and Hammersmith & City lines for a
number of days.

The service on the Piccadilly line will remain suspended between Arnos
Grove and Hyde Park Corner for the foreseeable future.

Following agreement with the Police, the Victoria line is now stopping
at King's Cross/St Pancras. The Northern line will start stopping at
King's Cross/St Pancras again from Monday 17 July."

Why is so much of the Piccadilly line closed? I'd have thought they could
run trains to within a station or so either side of the blockage. Or does
the damage to the cable between KX and RS have a knock-on effect on *all* of
the section north of KX? Is it a matter of where there are crossovers to
allow southbound trains to turn back at (say) KX to return north? You'd
think that at least Arnos Grove to Finsbury Park could be run, so as to feed
outlying passengers into the Victoria line and the NR lines into KX and
Moorgate.

Tunnel damage
 

"mtveurope" wrote in message
ups.com...
by the way... if they only have problem with the cables why does circle
will be working soon? does that line don't have cables? (I know it's
not so close to the train, but they're still there, don't they?


Pedro.

Different signalling sections. The rest of the line can work (i.e. the rest
of the Pic) but not the affected areas.

Loony T

Tunnel damage
 

On Tue, 19 Jul 2005 23:03:24 +0100, "Martin Underwood"
wrote:

"mtveurope" wrote in message
roups.com...
I just read this from the tube's website on the ask tube section
"Question


When will the Tubes be returning to normal after the events of 7 July?


Answer


We will not be in a position to add to the current level of service on
the Metropolitan, Circle, District and Hammersmith & City lines for a
number of days.

The service on the Piccadilly line will remain suspended between Arnos
Grove and Hyde Park Corner for the foreseeable future.

Following agreement with the Police, the Victoria line is now stopping
at King's Cross/St Pancras. The Northern line will start stopping at
King's Cross/St Pancras again from Monday 17 July."

Why is so much of the Piccadilly line closed? I'd have thought they could
run trains to within a station or so either side of the blockage. Or does
the damage to the cable between KX and RS have a knock-on effect on *all* of
the section north of KX? Is it a matter of where there are crossovers to
allow southbound trains to turn back at (say) KX to return north? You'd
think that at least Arnos Grove to Finsbury Park could be run, so as to feed
outlying passengers into the Victoria line and the NR lines into KX and
Moorgate.

Depends on the location of crossovers.

The crime scene is very close to the trailing crossover just south of
Kings Cross hence the closure.


There are no other crossovers between Arnos and Hyde Park Corner.

Rob.
--
rob at robertwoolley dot co dot uk