|
|
|
|
|
|
by stephen_g
2573 days ago
|
|
|
At the moment, all the analysis I've seen points more towards the only reason it's cheaper being because of the smaller size of the tunnel (there's actually nothing novel about the boring machine, it's just a standard one that is used to build utility tunnels with some minor tweaks), and because they don't build (or don't take into account) things like station caverns, cross linking tunnels, ventilation/emergency egress, etc. So if they actually built a subway it would cost... about the same as a subway. That's not to say that US subways aren't crazy expensive to build compared to Europe, Asia etc. - but that's more to do with legal issues (industrial relations etc.), business structures, and possibly corruption, rather than the technology. |
|
|