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Grande Dixence Dam
The Grande Dixence Dam () is a concrete gravity dam on the Dixence at the head of the Val d'Hérémence in the canton of Valais in Switzerland. At high, it is the tallest gravity dam in the world, seventh tallest dam overall, and the tallest dam in Europe. It is part of the Cleuson-Dixence Complex. With the primary purpose of hydroelectric power generation, the dam fuels four power stations, totaling the installed capacity to , generating approximately annually, enough to power 400,000 Swiss households. The dam withholds the Lac des Dix ('Lake of the Ten'), its reservoir. With a surface area of 4 km2, it is the second largest lake in Valais and the largest lake above 2,000 m in the Alps. The reservoir receives its water from four different pumping stations; the Z’Mutt, Stafel, Ferpècle and Arolla. At peak capacity, it contains approximately of water, with depths reaching up to . Construction on the dam began in 1950 and was completed in 1961, before officially commissi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dixence (river)
The Grande Dixence Dam () is a concrete gravity dam on the Dixence (river), Dixence at the head of the Val d'Hérémence in the canton of Valais in Switzerland. At high, it is the List of tallest dams in the world, tallest gravity dam in the world, seventh tallest dam overall, and the tallest dam in Europe. It is part of the Cleuson-Dixence Complex. With the primary purpose of hydroelectric power generation, the dam fuels four power stations, totaling the installed capacity to , generating approximately annually, enough to power 400,000 Swiss households. The dam withholds the Lac des Dix ('Lake of the Ten'), its reservoir. With a surface area of 4 km2, it is the second largest lake in Valais and the largest lake above 2,000 m in the Alps. The reservoir receives its water from four different pumping stations; the Z’Mutt, Stafel, Ferpècle and Arolla. At peak capacity, it contains approximately of water, with depths reaching up to . Construction on the dam began in 1950 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nurek Dam
The Nurek Dam (; Tajik: Нерӯгоҳи обии Норак, ''Nerūgohi obii Norak'', Tajik for Nurek Hydro-electric Station) is an earth-fill embankment dam on the Vakhsh River in Tajikistan. Its primary purpose is hydroelectric power generation and its power station has an installed capacity of 3,015 MW. Construction of the dam began in 1961 and the power station's first generator was commissioned in 1972. The last generator was commissioned in 1979 and the entire project was completed in 1980 when Tajikistan was still a republic within the Soviet Union, becoming the tallest dam in the world at the time. At , it is currently the second tallest man-made dam in the world, after being surpassed by Jinping-I Dam in 2013. The Rogun Dam, also along the Vakhsh in Tajikistan, may exceed it in size when completed. Construction The Nurek Dam was constructed by the Soviet Union between the years 1961 and 1980. It is uniquely constructed, with a central core of cement forming an imper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Dollar
The United States dollar (Currency symbol, symbol: Dollar sign, $; ISO 4217, currency code: USD) is the official currency of the United States and International use of the U.S. dollar, several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish dollar, Spanish silver dollar, divided it into 100 cent (currency), cents, and authorized the Mint (facility), minting of coins denominated in dollars and cents. U.S. banknotes are issued in the form of Federal Reserve Notes, popularly called greenbacks due to their predominantly green color. The U.S. dollar was originally defined under a bimetallism, bimetallic standard of (0.7734375 troy ounces) fine silver or, from Coinage Act of 1834, 1834, fine gold, or $20.67 per troy ounce. The Gold Standard Act of 1900 linked the dollar solely to gold. From 1934, its equivalence to gold was revised to $35 per troy ounce. In 1971 all links to gold were repealed. The U.S. dollar became an important intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bagnes
Bagnes is a former municipality in the district of Entremont in the canton of Valais in Switzerland. On 1 January 2021 the former municipalities of Bagnes and Vollèges merged to form the new municipality of Val de Bagnes. With an area of , Bagnes used to be the largest municipality of Switzerland until the formation of Glarus Süd in 2011. History Bagnes was first mentioned in 1150 as ''Banie''. It was formerly known by its German name, ''Bangis'', although this is no longer used. Before 1150, when it came to the abbey of Saint-Maurice, Bagnes was owned by the Counts of Savoy. It remained under the abbey's authority until 1798, when it became part of the Entremont district. Verbier castle (also called the ''abbaye'') is first mentioned in 1287 in Le Châble and was presumably destroyed in 1476. Throughout the 19th century, the radicals and conservatives feuded violently in the villages. This led, in 1844, to the bloody battle of Corberaye, in which three conservatives we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lac De Louvie
__NOTOC__ Lac de Louvie is a lake above Fionnay in the canton of Valais, Switzerland. The Lac de Louvie is paradise for all nature lovers such as trail runners and hikers. It is situated at above sea level and is a 2-hour walk from Fionnay. See also *List of mountain lakes of Switzerland This is a list of high-altitude lakes of Switzerland. It includes all significant lakes located either entirely or partly in Switzerland, both natural and artificial, with an area of at least 4 ha (9.9 acres) and a location at over above sea l ... References External links * Louvie {{Valais-lake-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelton Wheel
The Pelton wheel or Pelton Turbine is an Impulse (physics), impulse-type water turbine invented by American inventor Lester Allan Pelton in the 1870s. The Pelton wheel extracts energy from the impulse of moving water, as opposed to water's dead weight like the traditional overshot water wheel. Many earlier variations of impulse turbines existed, but they were less Energy conversion efficiency, efficient than Pelton's design. Water leaving those wheels typically still had high speed, carrying away much of the dynamic energy brought to the wheels. Pelton's paddle geometry was designed so that when the rim ran at half the speed of the water jet, the water left the wheel with very little speed; thus his design extracted almost all of the water's impulse energywhich made for a very efficient turbine. History file:Pelton wheel (patent).png, Figure from Lester Allan Pelton's original October 1880 patent Lester Allan Pelton was born in Vermillion, Ohio in 1829. In 1850, he traveled ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Installations Hydroélectriques De La Grande Dixence
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Installation may refer to: * Installation (Christianity), a Christian liturgical act that formally makes a clergyman assume office of his appointed position at a particular place * Installation (computer programs), the act of making the program ready for execution * Installation art, an artistic genre of three-dimensional works that are often site-specific and designed to transform the perception of a space * Military installation, a grouping of facilities that constitute a permanent military base A military base is a facility directly owned and operated by or for the military or one of its branches that shelters military equipment and personnel, and facilitates training and operations. A military base always provides accommodations for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier
A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land“Glacier, N., Pronunciation.” Oxford English Dictionary, Oxford UP, June 2024, https://doi.org/10.1093/OED/7553486115. Accessed 25 Jan. 2025. and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on ever ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhône
The Rhône ( , ; Occitan language, Occitan: ''Ròse''; Franco-Provençal, Arpitan: ''Rôno'') is a major river in France and Switzerland, rising in the Alps and flowing west and south through Lake Geneva and Southeastern France before discharging into the Mediterranean Sea (Gulf of Lion). At Arles, near its mouth, the river divides into the Great Rhône () and the Little Rhône (). The resulting River delta, delta forms the Camargue region. The river's source is the Rhône Glacier, at the east edge of the Cantons of Switzerland, Swiss canton of Valais. The glacier is part of the Saint-Gotthard Massif, which gives rise to three other major rivers: the Reuss (river), Reuss, Rhine and Ticino (river), Ticino. The Rhône is, with the Po (river), Po and the Nile, one of the three Mediterranean rivers with the largest Discharge (hydrology), water discharge. Etymology The name ''Rhône'' continues the Latin name (Ancient Greek, Greek ) in Greco-Roman geography. The Gaulish name of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penstock
A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is of Scots origin, and was inherited from the earlier technology of mill ponds and watermills, with penstocks diverting pond waters to drive the mills. Hydroelectric systems and dams Penstocks for hydroelectric installations are normally equipped with a gate system and a surge tank. They can be a combination of many components such as anchor block, drain valve, air bleed valve, and support piers depending on the application. Flow is regulated to suit turbine operation and is cut off when turbines are not in service. Penstocks, particularly where used in polluted water systems, need to be maintained by hot water washing, manual cleaning, antifouling coatings, allowing waters to go anoxic, and desiccation used to dry fouling out so that it may slough off or become easier to remove through manual processes. The t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lac De Cleuson
__NOTOC__ Lac de Cleuson is a reservoir in the municipality of Nendaz, Valais, Switzerland. Its surface area is . Water from the reservoir is often pumped into the Grande Dixence Dam's reservoir, Lac des Dix, for use in hydroelectricity production. See also *List of lakes of Switzerland *List of mountain lakes of Switzerland This is a list of high-altitude lakes of Switzerland. It includes all significant lakes located either entirely or partly in Switzerland, both natural and artificial, with an area of at least 4 ha (9.9 acres) and a location at over above sea l ... External links * *Swiss Committee on Dams, Lac de Cleuson - https://web.archive.org/web/20100715210229/http://www.swissdams.ch/dams/damForm/default_e.asp?ID=31 *Walk from Siviez to the dam of Lac de Cleuson - http://myswitzerland.flaggy.ch/nendaz/eng/cleuson-e.htm Reservoirs in Switzerland Lakes of Valais {{valais-lake-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grout Curtain
A grout curtain is a barrier that protects the foundation of a dam from seepage and can be made during initial construction or during repair. Additionally, it can be used to strengthen foundations and contain spills. Characteristics A grout curtain usually consists of a row of vertically drilled holes filled with pressurized grout, a process commonly known as pressure grouting. The holes are drilled in intervals and in such a way that they cross each other, creating a curtain. Method Grout is injected with grouting jets, which use a high-pressure fluid stream (i.e., slurry or water) to erode a cavity in the soil. See also *Levee *Dam failure A dam failure or dam burst is a catastrophic type of structural failure characterized by the sudden, rapid, and uncontrolled release of impounded water or the likelihood of such an uncontrolled release. Between the years 2000 and 2009 more than ... References External linksCurtain Grouting the Georgetown Lighthouse [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
