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OT: If you need to make a big hole #36683 04/12/04 09:58 AM
Joined: Sep 2002
Posts: 1,497
C
C-H Offline OP
Member
When you need to make holes for LARGE conduit:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=3284949854

Work Gear for Electricians and the Trades
Re: OT: If you need to make a big hole #36684 04/12/04 10:32 AM
Joined: Jan 2003
Posts: 4,391
I
iwire Offline
Moderator
Cool I will take two.

A private tunnel from my house to the main highway would be nice. [Linked Image]


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: OT: If you need to make a big hole #36685 04/12/04 04:14 PM
Joined: Aug 2001
Posts: 7,520
P
pauluk Offline
Member
Is this for real?! Looking at the bidding there seems to have been a lot of administrative cancelations.

Quote
Local pickup only (no postage)
Aw gee..... A little too big for the FedEx van, eh? [Linked Image]

Re: OT: If you need to make a big hole #36686 04/13/04 10:42 AM
Joined: Aug 2002
Posts: 1,691
S
SvenNYC Offline
Member
Wonder why the museum is selling it and why it hasn't been used by the construction company for other tunnel digging projects?

It seems to be too expensive and complicated a piece of machinery for it to have only been used once.

Re: OT: If you need to make a big hole #36687 04/13/04 11:26 AM
Joined: Sep 2001
Posts: 806
N
NJwirenut Offline
Member
That is only a small part of a TBM machine, namely the cutter head.

The entire machine includes equipment for generating power, moving the cutter forward, laying tracks, evacuating excavated material, and installing concrete tunnel support sections as digging progresses.

The TBMs actually used for digging the main channel tunnel are still underground, AFAIK. As the tunnel is lined with concrete behind the machine as it digs, the tunnel is too small to allow the machine to back out after digging. At the conclusion of digging, the machines were steered off to the side of the main tunnel, and abandoned in place.

Re: OT: If you need to make a big hole #36688 04/13/04 11:45 PM
Joined: Aug 2002
Posts: 1,081
T
ThinkGood Offline
Member

Re: OT: If you need to make a big hole #36689 04/14/04 12:59 AM
Joined: Feb 2004
Posts: 1,436
Lostazhell Offline
Member
Hey I think I was supposed to order one of those! Along with a wire stretcher & some skyhooks! [Linked Image]

Re: OT: If you need to make a big hole #36690 04/14/04 05:37 AM
Joined: Aug 2001
Posts: 7,520
P
pauluk Offline
Member
A tunneling shield was used many, many decades ago to dig the deep-level "Tube" lines of the London Underground as well.

For anyone touring this part of the world, I can thoroughly recommend using the Channel Tunnel. It's much smoother and quieter than either the London Underground or the New York Subway, and very quick.

All the formalities are handled at the boarding end, so if you're going through with your car you just drive off the train at the far end and straight out onto the motorway/autoroute.

Great if you're not a good sailor, like me! [Linked Image]


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