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Canal Tunnel
{{Refimprove, date=September 2009 A canal tunnel is a tunnel for a canal. The building of a canal tunnel is crucial to help a waterway that is normally used for shipping cross a difficult section of terrain. They are also constructed to reduce the dependency on canal locks. The longest canal tunnel in the world is the Rove Tunnel in France, currently disused. Other notable examples of canal tunnels include the proposed Stad Ship Tunnel in Norway, a proposed tunnel for sea going vessels, Standedge Tunnel, the longest, deepest and highest in the United Kingdom and Harecastle Tunnel, another noteworthy tunnel in the UK. The oldest canal tunnel in the world is the Malpas Tunnel also in France, built in 1679. In some canal tunnels the towpath continues through the tunnel. In other cases, especially on English narrow canals, there is no towpath. The horse would be led over the hill and the boat would be propelled by legging. The term "canal tunnel" is not commonly applied to tunne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shrewley Tunnel Interior
Shrewley is a village and civil parish in Warwickshire, England, about 5 miles north-west of Warwick. It consists of Little Shrewley, and Shrewley Common, Hatton Station, Station Road and Five Ways. It has the Grand Union Canal, which passes through Shrewley Tunnel and cutting which is a Site of Special Scientific Interest, SSSI, with the Chiltern Main Line railway and M40 motorway all running parallel and in close proximity at the south-western end of Shrewley Common. The parish has two pubs, The Durham Ox, in Shrewley Common, once well known for its Marrow Sunday post-harvest celebration, steam fair and produce competition and auction, and ''The Case is Altered'' at Five Ways. Shrewley has no church, but until the 1990s had an independent chapel with a regular congregation, the site of ...
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Towpath
A towpath is a road or trail on the bank of a river, canal, or other inland waterway. The purpose of a towpath is to allow a land vehicle, beasts of burden, or a team of human pullers to tow a boat, often a barge. This mode of transport was common where sailing was impractical due to tunnels and bridges, unfavourable winds, or the narrowness of the channel. After the Industrial Revolution, towing became obsolete when engines were fitted on boats and when railway transportation superseded the slow towing method. Since then, many of these towpaths have been converted to multi-use trails. They are still named towpaths — although they are now only occasionally used for the purpose of towing boats. History Early inland waterway transport used the rivers, and while barges could use sails to assist their passage when winds were favourable or the river was wide enough to allow tacking, in many cases this was not possible, and gangs of men were used to bow-haul the boats. As riv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canals
Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers. In most cases, a canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as ''slack water levels'', often just called ''levels''. A canal can be called a ''navigation canal'' when it parallels a natural river and shares part of the latter's discharges and drainage basin, and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley. A canal can cut across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation. The best-known example of such a canal is the Panama Canal. Many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Canal Tunnels In The United Kingdom
This is a list of canal tunnels in the United Kingdom. Listed by name Navigatable adits and mine levels An adit is a horizontal entrance to a mine: Listed by canal Grand Union Canal * Blisworth Tunnel, Northamptonshire * Braunston Tunnel, Northamptonshire * Crick Tunnel, Northamptonshire *Husbands Bosworth Tunnel, Leicestershire * Saddington Tunnel, Leicestershire *Shrewley Tunnel, Warwickshire Peak Forest Canal * Hyde Bank Tunnel * Woodley Tunnel Regent's Canal *Islington Tunnel * Lisson Grove Tunnel *Maida Hill Tunnel Union Canal (Scotland) * Falkirk Tunnel, Falkirk * Roughcastle Tunnel, Falkirk. Part of the Falkirk Wheel complex; leads to Locks 1 & 2 and South Basin See also *Canals of Ireland *Canals of the United Kingdom * History of the British canal system * Legging (canals) *List of canals *List of canal aqueducts in the United Kingdom *List of canal basins in Great Britain *List of canal junctions in the United Kingdom * List of canal locks in the United Kin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingdom Of Travancore
The asterisk ( ), from Late Latin , from Ancient Greek , ''asteriskos'', "little star", is a typographical symbol. It is so called because it resembles a conventional image of a heraldic star. Computer scientists and mathematicians often vocalize it as star (as, for example, in ''the A* search algorithm'' or ''C*-algebra''). In English, an asterisk is usually five- or six-pointed in sans-serif typefaces, six-pointed in serif typefaces, and six- or eight-pointed when handwritten. Its most common use is to call out a footnote. It is also often used to censor offensive words. In computer science, the asterisk is commonly used as a wildcard character, or to denote pointers, repetition, or multiplication. History The asterisk has already been used as a symbol in ice age cave paintings. There is also a two thousand-year-old character used by Aristarchus of Samothrace called the , , which he used when proofreading Homeric poetry to mark lines that were duplicated. Origen is k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Tunnel (physical Infrastructure)
Water tunnels are tunnels (below-ground channels) used to transport water to areas with large populations or agriculture. They are frequently part of aqueducts. Some aqueducts, such as the Delaware Aqueduct are single long tunnels. In other cases, such as the San Jacinto tunnel on the Colorado River Aqueduct, water tunnels form parts of far longer aqueducts. In cases where the outflow of a water tunnel is into an existing stream or river flowing to the point of water use, the term aqueduct is less likely to be used, as with the Harold D. Roberts Tunnel from Dillon Reservoir to the North Fork South Platte River. Notable water tunnels, or systems including water tunnels * Alva B. Adams Tunnel from the western slope of the Colorado River drainage to the eastern Front Range of Colorado, *Angeles Tunnel 7.2 mile (11.6 km) *Bagur Navile Tunnel 6 miles (9.7 km) * Bosporus Water Tunnel *Chicago Tunnel and Reservoir Plan 109.4 miles (176.1 km) *Denver Water **Moffat Tunnel 6.2 mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irtysh–Karamay–Ürümqi Canal
The Irtysh–Karamay–Ürümqi Canal (), also known as the Project 635 () Canal, is a system of water-transfer canals and reservoirs in the northern part of China's Xinjiang Uighur Autonomous Region. It transfers water from the Irtysh River (which flows toward the Arctic Ocean) into several dry endorheic basins of north-central Xinjiang, where it is used for irrigation and general use of the population and industries. The canal is often referred in Chinese publications simply the "Project for Supplying Water From the Irtysh" ("引额供水"工程). According to Chinese planners, the water carried by the canal will eventually irrigate 140,000 hectares of land. An important user of the canal's water is the petroleum industry around Karamay. History The ideas for redirecting some of the waters of the Irtysh for irrigation use in the (Soviet) Central Asia was actively discussed in the USSR in the mid-20th century. However, the bulk of the Soviet Northern river reversal project w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Longest Tunnels
This list of longest tunnels ranks tunnels that are at least long. Only continuous tunnels are included. Pipelines, even those that are buried, are excluded. The longest tunnels have been constructed for water distribution, followed by tunnels for railways. __TOC__ World's longest tunnels (in use) World's longest tunnels (under construction) World's longest tunnels (advanced planning stage) World's longest tunnels (abandoned) See also * List of long tunnels by type – contains separate tables for railroad, subway, vehicular, bicycle, water/aquaducts, and also for different building techniques * List of deepest caves * List of deepest mines * Lists of tunnels * List of longest railway tunnels ** List of long railway tunnels in China * List of longest subway tunnel sections * List of longest bridges This is a list of the world's longest bridges that are more than in length sorted by their full length above land and water. The main span is the longest span wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armenia
Armenia (), , group=pron officially the Republic of Armenia,, is a landlocked country in the Armenian Highlands of Western Asia.The UNbr>classification of world regions places Armenia in Western Asia; the CIA World Factbook , , and ''Oxford Reference Online'' also place Armenia in Asia. It is a part of the Caucasus region; and is bordered by Turkey to the west, Georgia to the north, the Lachin corridor (under a Russian peacekeeping force) and Azerbaijan to the east, and Iran and the Azerbaijani exclave of Nakhchivan to the south. Yerevan is the capital, largest city and the financial center. Armenia is a unitary, multi-party, democratic nation-state with an ancient cultural heritage. The first Armenian state of Urartu was established in 860 BC, and by the 6th century BC it was replaced by the Satrapy of Armenia. The Kingdom of Armenia reached its height under Tigranes the Great in the 1st century BC and in the year 301 became the first state in the world to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Sevan
Lake Sevan ( hy, Սևանա լիճ, Sevana lich) is the largest body of water in both Armenia and the Caucasus region. It is one of the largest freshwater high-altitude (alpine) lakes in Eurasia. The lake is situated in Gegharkunik Province, at an altitude of above sea level. The total surface area of its basin is about , which makes up of Armenia's territory. The lake itself is , and the volume is . It is fed by 28 rivers and streams. Only 10% of the incoming water is drained by the Hrazdan River, while the remaining 90% evaporates. The lake provides some 90% of the fish and 80% of the crayfish catch of Armenia. Sevan has significant economic, cultural, and recreational value. Its sole major island (now a peninsula) is home to a medieval monastery. Sevan was heavily exploited for irrigation of the Ararat plain and hydroelectric power generation during the Soviet period. Consequently, its water level decreased by around and its volume reduced by more than 40%. Later two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arpa (river)
The Arpa ( hy, Արփա, az, Arpaçay) is a river that flows through Armenia and Azerbaijan's Nakhchivan exclave. It originates in the Vayots Dzor province (''marz'') of Armenia and is a left tributary of the Aras. It is long, and has a drainage basin of . It runs through many cities and towns, including Jermuk, , , [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Legging (canals)
Legging is a method of moving a boat through a canal tunnel or adit containing water. This method of navigating through canal tunnels and adits was commonly used in canal tunnels during the 18th and early 19th centuries. Legging in canal tunnels Early canal tunnels were built without a towpath as this would require a much larger bore, and hence cost more to build. Prior to the introduction of motorised boats, legging was one of the few options for getting a boat through such a tunnel. Two people were required. They would lie on a plank across the bows of the boat, and holding the plank with their hands, would propel the boat with their feet against the tunnel wall. This was quite a dangerous activity and resulted in many deaths. In later years 'wing' boards were hooked on to the boat to make the operation safer. At Crimson Hill tunnel, alternate stones in the walls were recessed to provide better tread for the leggers. While the boat was being legged through the tunnel, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
