Canal Tunnel


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Canal Tunnel

 

a tunnel constructed at the point where a navigation canal cuts through an upland or mountain range. The first canal tunnel, built in France in 1681, was approximately 160 m long and 6.7 m wide. The largest modern canal tunnel is the Rove Tunnel, constructed in the 1920’s on the Marseille-Aries Canal in France, which allows navigation by ships with displacements up to 1,000 tons; the tunnel is more than 7 km long and 22 m wide, with a height of 15.4 m (for a water depth of 4 m). Because of high construction costs and the necessity of ensuring safe operations, canal tunnels are usually designed for one-way traffic. Canal tunnels differ from conventional transportation tunnels in the shape of their cross section and in the reinforced waterproofing of the lower (underwater) part. Ships are usually moved through canal tunnels by special mechanical traction.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Broad Street Canal Tunnel will be closed for Metro extension works
Broad Street Canal Tunnel will be shut for narrow boats and pedestrians who normally use its footpaths to walk between Gas Street Basin and Brindleyplace.
Broad Street Canal Tunnel will close to canal and towpath traffic in both directions until work is completed, and two-way traffic signals will control vehicle traffic on the road above.
IT was interesting to read about my local canal system in the interesting article headlined 'Discover Brum's Hidden Gems' - but I think the details about Wast Hills canal tunnel were not quite correct.
The bodies of two men will remain buried in a collapsed Midland canal tunnel until Monday, rescuers predict.Teams battled through the night to reach the two workmen who were buried in tons of soil and rubble when the roof of Wast Hill tunnel, on the Birmingham to Worcester canal at King's Norton, caved in yesterday.
Canal experts will lead the Newbold Tunnel Trail at 2.30pm on Saturday, where people will be able to walk through the canal tunnel and discover more about local waterway stories.
| Amco dead or dangerous tree, Huddersfield Narrow Canal Tunnel End Waters Road Marsden.
Sixty Midland children were trapped for almost seven hours in a dark canal tunnel when their boat was jammed by driftwood.
Work on the tunnel - at three miles Britain's longest, deepest and highest canal tunnel - began in 1794 but it was a massive undertaking having to blast through the rock and it wasn't completed until 1811.