I was shocked at the scale of the east end stations like Corktown and Moss Park
The extent of the Corktown Station site hoarding includes the future transit-oriented community development as well as the actual station. For Moss Park, however, it's just the station but the construction method may be cut-cover because it looks like it covers the full extent of the underground station volume.
 
If the TBMs will pass through the cavern, what is going to propel them forward given that they use tunnels walls for leverage?
They don't need that extra leverage when passing through empty space, as they don't need the extra force to break rock.

Passing through a station cavern is pretty normal for a bored subway.
 
If the TBMs will pass through the cavern, what is going to propel them forward given that they use tunnels walls for leverage?
From this cross rail document, they used temporary rails and hydraulic jacks to move the TBM.
Screenshot_2025-02-07-14-12-58-82_40deb401b9ffe8e1df2f1cc5ba480b12.jpg


CC: @Kyle Campbell
 
From this cross rail document, they used temporary rails and hydraulic jacks to move the TBM.
View attachment 630146

CC: @Kyle Campbell
I thought they were always on the rails and could jack themselves. Today I learned something.
 
If the TBMs will pass through the cavern, what is going to propel them forward given that they use tunnels walls for leverage?

It depends on how advanced the station pit is when the TBM passes through.
If it is just open excavation, then the TBMs will lay down tunnel liners, and the TBM will push off the tunnel liners and the tunnel liners will be demolished later.
If the station is already built up, as others have said, the TBM can pass along a track through the station box.

Canada Line first pass through Vancouver City Centre Station May 2007:
R8efSBr.jpeg
M9mQhUm.jpeg


Canada Line second pass through Vancouver City Centre Station after it was built up Jan 2008
(on a track and pushing off that steel frame):
cReNQVV.jpeg


Broadway Extension TBM passing through Broadway-City Hall Station on a steel track:

To bore out of the station box, the TBM presses against temporary tunnel rings anchored to the red steel brace
like on the Canada Line pic above:

Here's a shot of the back of a TBM:

 
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Remember when Metrolinx lied to the entire Leslieville community and said their “noise barriers” (made out of non porous, non sound deadening glass panels) would also be “graffiti proof”?? Gosh darn it looks like they’re not holding up so well less than 3 months after install. Thanks for creating a ghetto in the east end just as was created in the West end with the UpExpress corridor. Clearly Mx doesn’t have the capability to learn from past mistakes or listen to communities. I personally begged them not to install glass that will also do little to sound proof and end up covered in graffiti … it should also be know that city has no additional budgets to clean the graffiti so welcome to miles of new ghettos along the OL… Anybody surprised by Mx ineptitude? They’re so maddening to deal with.
 

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I personally begged them not to install glass that will also do little to sound proof and end up covered in graffiti … it should also be know that city has no additional budgets to clean the graffiti so welcome to miles of new ghettos along the OL….
I'm pretty sure it's Metrolinx that has to deal with this graffiti. It's their property.
 
I'm pretty sure it's Metrolinx that has to deal with this graffiti. It's their property.
You obviously haven’t been to the west aend of the city because it’s been completely covered in graffiti for over a decade… knowing this…. They still used the same garbage solution a decade-+ later despite rallying cries from the community. Glass also has little to no sound deadening properties and installing glass in what is currently a commercial parking lot is absolutely ridiculous. European cities use actual sound deadening materials and also grow vegetation or have fake vegetation on walls like this which prevents graffiti from ever happening in the first place. What makes this an even tougher pill to swallow is that we’re spending more on this project than if it were tunneled underground since Mx forgot that every single bridge needs to be torn down and rebuilt when they first made the argument that running it within the corridor would save $$$ when it has proven to cost more. Imagine spending more on a worse outcome for communities. Mx is an absolute joke of an agency 🥴 🫠
 
You obviously haven’t been to the west aend of the city because it’s been completely covered in graffiti for over a decade… knowing this…. They still used the same garbage solution a decade-+ later despite rallying cries from the community. Glass also has little to no sound deadening properties and installing glass in what is currently a commercial parking lot is absolutely ridiculous. European cities use actual sound deadening materials and also grow vegetation or have fake vegetation on walls like this which prevents graffiti from ever happening in the first place. What makes this an even tougher pill to swallow is that we’re spending more on this project than if it were tunneled underground since Mx forgot that every single bridge needs to be torn down and rebuilt when they first made the argument that running it within the corridor would save $$$ when it has proven to cost more. Imagine spending more on a worse outcome for communities. Mx is an absolute joke of an agency 🥴 🫠
Tunnelling the line completely would cost much, much more than reusing the existing corridor and rebuilding the bridges. Bridges that would have needed rebuilding regardless of if the Ontario Line were being built in the corridor or not.
 
Tunnelling the line completely would cost much, much more than reusing the existing corridor and rebuilding the bridges. Bridges that would have needed rebuilding regardless of if the Ontario Line were being built in the corridor or not.
Nope. You’re wrong. The TTC that was complete with an environmental study (that was disregarded by Mx and Ford) WAS cheaper and the OL budget increased by 2x and still counting. Even still that’s a secondary point to the problem that Mx lied about and committed to using “graffiti proof” material when in fact they’ve gone ahead and used the same garbage that CLEARLY isn’t graffiti proof and barely has any impact on sound. Glass as a noise wall. Even a 20 year year old non engineer would know that’s not gonna work.
 

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