Canal Tunnel


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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.

References in periodicals archive ?
Passing under the Pennines from Diggle to Marsden, the tunnel was, and remains today, the longest, highest (above sea level) and deepest (underground) canal tunnel in Britain.
The 101-year-old Sharpness used to work the Worcester and Birmingham Canal Tunnel and was used to pull a train of boats through the West Hill Tunnel, also working as an icebreaker.
At the far end of the brick wall descend to a road and turn right beneath the canal tunnel.
Chris Upton looks back at the days when Dudley's underground canals for the extraction of limestone first became a huge tourist attraction Dudley's subterranean world - (top) The mouth of The Severn Sisters limestone caves at the Wren's Nest pictured in 1967 and (left) day trippers pictured at the Castle Mill Basin, near the Dudley Canal Tunnel, in 1917; and (above) an 1849 view of Dudley Castle on Castle Hill beneath which lay the limestone caverns visited by an estimated 100,000 people on the tours organised at the 1855 castle fete
There are three rail tunnels two former single track tunnels being disused and the dual track tunnel temporarily closed yesterday and a canal tunnel.
The three-mile tunnel - the highest and longest canal tunnel in Britain - will allow boats to travel under the Pennines from West Yorkshire into Greater Manchester.
Four young holidaymakers were cruising home last night after spending two days in a narrow boat trapped in the 3,000 yard long Dudley canal tunnel.
Standedge Tunnel and Visitor Centre is looking for volunteers to teach visitors about the history and facts and figures behind Britain's longest canal tunnel.
Mrs Colette Simmons claimed she was told there was a possibility that the 200-year-old canal tunnel ventilation shaft being taken away when she moved into her council home in Station Road, Old Hill, Cradley Heath, two years ago.
Included in the prize is admission for up to four adults, a welcome pack and introductory tour of the site, a ride on a vintage vehicle, a canal tunnel trip and a meal in the Stable Cafe or traditional fish & chips.
Also on the list are man-made wonders including Huddersfield Railway Station, the Victoria Tower on Castle Hill, Emley Moor Mast, the tallest freestanding structure in the UK, and Standedge Tunnel, the longest and highest canal tunnel in the country.