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St Pancras Low Level
I was standing at St Pancras Low Level the other day and saw that from
the Northern end of the platforms you can see a couple of bored tunnels. One is to the left of the Midland line and the other is to the right. Both are fenced off and neither has track laid. Would I be right in thinking that these are the eventual connections to the ECML? I had assumed they would be cut-and-cover rather than bored. Does anyone know any details? |
St Pancras Low Level
On Apr 3, 10:24*am, wrote: I was standing at St Pancras Low Level the other day and saw that from the Northern end of the platforms you can see a couple of bored tunnels. One is to the left of the Midland line and the other is to the right. Both are fenced off and neither has track laid. Would I be right in thinking that these are the eventual connections to the ECML? Yes. I had assumed they would be cut-and-cover rather than bored. Does anyone know any details? Sorry, not really. I think they're cut and cover at the northern end though - see this bird's eye view: http://maps.live.com/default.aspx?cp...&style=b&lvl=1 |
St Pancras Low Level
In message
, at 03:08:44 on Fri, 3 Apr 2009, Mizter T remarked: I had assumed they would be cut-and-cover rather than bored. Does anyone know any details? Sorry, not really. I think they're cut and cover at the northern end though - see this bird's eye view: http://maps.live.com/default.aspx?cp...&style=b&lvl=1 The SPILL box itself was built as cut and cover, but that view above clearly shows why you couldn't realistically cut and cover all the way to the ECML. This picture might also be helpful, as it shows where SPILL is positioned, and hints at the length of tunnel required to meet up with the ECML (aligned left to right at the very bottom of the map). http://www.arup.com/_assets/_download/download268.pdf -- Roland Perry |
St Pancras Low Level
In message , at 11:35:14 on Fri, 3
Apr 2009, Paul Terry remarked: The northernmost part is cut and cover, but the rest was always planned as bored. And if, as some suspect, they never see traffic as a result of cutbacks - they'll always be bored. -- Roland Perry |
St Pancras Low Level
On Apr 3, 11:39*am, Roland Perry wrote: In message , at 03:08:44 on Fri, 3 Apr 2009, Mizter T remarked: I had assumed they would be cut-and-cover rather than bored. Does anyone know any details? Sorry, not really. I think they're cut and cover at the northern end though - see this bird's eye view: http://maps.live.com/default.aspx?cp...&style=b&lvl=1 The SPILL box itself was built as cut and cover, but that view above clearly shows why you couldn't realistically cut and cover all the way to the ECML. This picture might also be helpful, as it shows where SPILL is positioned, and hints at the length of tunnel required to meet up with the ECML (aligned left to right at the very bottom of the map). http://www.arup.com/_assets/_download/download268.pdf Interesting. The positioning is pretty tight - avoiding the original bits of St Pancras station, the British Library and the housing to the west of Midland Road. I'd be interested to know how far if at all this alignment deviates from what was there beforehand, i.e. the subterranean course of the Thameslink line before SPILL was constructed. |
St Pancras Low Level
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St Pancras Low Level
On 3 Apr, 11:26, Roland Perry wrote:
In message , at 11:35:14 on Fri, 3 Apr 2009, Paul Terry remarked: The northernmost part is cut and cover, but the rest was always planned as bored. And if, as some suspect, they never see traffic as a result of cutbacks - they'll always be bored. -- Roland Perry Cutbacks to which programme, Thameslink? Is that really likely? Surely now that the tunnels are built, the connection to ECML isn't that extensive? I did wonder how well the flat junction onto the ECML would work though. |
St Pancras Low Level
On 3 Apr, 14:23, wrote:
Cutbacks to which programme, Thameslink? Is that really likely? Surely now that the tunnels are built, the connection to ECML isn't that extensive? Yes, but they're only useful if the very expensive works to open up capacity through London Bridge and Bermondsey go ahead. There's a reasonable argument not to go ahead with this whole phase of works once the current phase (12 cars at Farringdon and Blackfriars) is done. I did wonder how well the flat junction onto the ECML would work though. Holloway flyover plus all the bi-directional signalling in the area means you have a lot of flexibility to avoid conflicts. U |
St Pancras Low Level
wrote in message ... On 3 Apr, 11:26, Roland Perry wrote: In message , at 11:35:14 on Fri, 3 Apr 2009, Paul Terry remarked: The northernmost part is cut and cover, but the rest was always planned as bored. And if, as some suspect, they never see traffic as a result of cutbacks - they'll always be bored. -- Roland Perry Cutbacks to which programme, Thameslink? Is that really likely? Surely now that the tunnels are built, the connection to ECML isn't that extensive? Not incorporating GN is a suggestion sometimes made in the event that the London Bridge station phase of the work ( KO2) doesn't happen, ie there is no capacity for the services. AFAICT partial GN diversion to Thameslink is a fundamental part of the required capacity improvements on the GN though, because KX suburban cannot be extended or widened on the existing site. As work isn't due to start til 2012 though, anything could happen if the allocated funding is hijacked for something else by the Treasury... I did wonder how well the flat junction onto the ECML would work though. Only 6 (might be 8?) tph are intended to transfer from GN onto Thameslink - with a remaining minority service into Kings Cross, and all those from the GN slows. It ought therefore to be the least problematic junction, especially in comparison to the merging with the existing services at St Pancras LL, and then the 8/16 tph flat junction at the Blackfriars end of the core section, separating the 25% 'non - London Bridge' services... Paul S |
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