[Articles] DART Underground

dowlingm · 14-08-2008, 00:51

6m internal diameter, that's 19'8 - how much clearance from rail to wire/tunnel is that likely to be? The Mount Royal tunnel in Montreal has a 14'6" height limit but AMT are ordering the same reduced height multilevel coaches as New Jersey Transit - although they are locohaul push/pull not EMUs.

Mark · 14-08-2008, 08:36

Are they planned on removing the TBMs in St. Stephen's Green?

Colm Moore · 14-08-2008, 18:06

Thats really a matter for the contractor.

With Metro North the suggestion is that the TBM be parked in a stub tunnel and stripped, leaving the lining in place.

Interconnector is a bit more up in the air. (Not! - pun!)

stupido · 15-08-2008, 08:48

The TBMs will be buried. it is cheaper to leave them in the ground then to dismantle them and dispose of them later.

Metro TBMS will stay under St Stephen Green. Interconnector TBM will be buried also.

Problem is each machine is individually designed for a project and the projected ground conditions. It is not that easy to sell them second hand!

Brian Condron · 15-08-2008, 11:41

Quote:

Originally Posted by stupido

Problem is each machine is individually designed for a project and the projected ground conditions. It is not that easy to sell them second hand!

Surely there is an abundance Ocean's 13 type situations out there, where TBMs are required to create an artifical earthquake. Or has Hollywood lied to me again?

Thomas J Stamp · 15-08-2008, 15:25

we shall be using them to build our large, retro-style undergound headquaters.

Colm Moore · 16-08-2008, 13:48

Quote:

Originally Posted by stupido

The TBMs will be buried. it is cheaper to leave them in the ground then to dismantle them and dispose of them later.

Some parts like electrical equipment and the cutting heads are suitable for re-use or even just salvage.

Problem is each machine is individually designed for a project and the projected ground conditions. It is not that easy to sell them second hand![/quote]Actually one of the Port Tunnel TBMs was reused.

15-08-2008, 15:25	#6
Thomas J Stamp Chairman/Publicity Join Date: Dec 2005 Location: The Home of Hurling Posts: 2,708	we shall be using them to build our large, retro-style undergound headquaters. __________________ We are the passengers

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14-08-2008, 00:51	#1
dowlingm Really Really Regluar Poster Join Date: Aug 2006 Location: Toronto, Canada Posts: 1,371	6m internal diameter, that's 19'8 - how much clearance from rail to wire/tunnel is that likely to be? The Mount Royal tunnel in Montreal has a 14'6" height limit but AMT are ordering the same reduced height multilevel coaches as New Jersey Transit - although they are locohaul push/pull not EMUs.

14-08-2008, 08:36	#2
Mark Member Join Date: Dec 2005 Location: Northern line Posts: 1,311	Are they planned on removing the TBMs in St. Stephen's Green?

14-08-2008, 18:06	#3
Colm Moore Local Liaison Officer Join Date: Dec 2006 Posts: 5,442	Thats really a matter for the contractor. With Metro North the suggestion is that the TBM be parked in a stub tunnel and stripped, leaving the lining in place. Interconnector is a bit more up in the air. (Not! - pun!)

15-08-2008, 08:48	#4
stupido New to the board Join Date: Aug 2008 Posts: 5	The TBMs will be buried. it is cheaper to leave them in the ground then to dismantle them and dispose of them later. Metro TBMS will stay under St Stephen Green. Interconnector TBM will be buried also. Problem is each machine is individually designed for a project and the projected ground conditions. It is not that easy to sell them second hand!