Northern's Tunnels

Deleted
Deleted Member

Posts: 0

Northern's Tunnels Feb 17, 2006 9:25:22 GMT

Post by Deleted on Feb 17, 2006 9:25:22 GMT

I thought that because this was to do with BVE, I'd post it here.

Between S Wimbledon and Morden, for a moment, theres a 'square' tunnel - where signal Y2 is.

Why's this tunnel different? Is it part of an orginal extension or something?

EDIT: Have just had a brainwave: Is it that this is the cut and cover method - transition from tube tunnel to open air?

I need to think before posting! ;D

Last Edit: Feb 17, 2006 14:11:09 GMT by Deleted

Tomcakes Posts: 3,852	Northern's Tunnels Feb 19, 2006 13:21:16 GMT Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Tomcakes on Feb 19, 2006 13:21:16 GMT AFAIK, you're right.
	"Sit back and watch the Great British Workman in action in the West End's best show - NOW EXTENDED!"

richardh
Guest

Northern's Tunnels Feb 20, 2006 17:35:30 GMT

Post by richardh on Feb 20, 2006 17:35:30 GMT

Yep, cut and cover was only done for lines based close to the road surface. I think that section must be close to the road level, as otherwise they'd have used the deep level tunneling method. (Hywel Williams' excellent site explains everything you need to know about tunneling and the underground it's self - www.underground-history.co.uk/front.php ;D )

Last Edit: Feb 20, 2006 17:35:45 GMT by richardh

Post by Deleted on Feb 17, 2006 9:25:22 GMT

Post by Tomcakes on Feb 19, 2006 13:21:16 GMT

Post by richardh on Feb 20, 2006 17:35:30 GMT