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Minamiaiki Dam
The Minamiaiki Dam is a rock-fill embankment dam on the Minamiaiki River in Minamiaiki, Nagano Prefecture, Japan. Together with the Ueno Dam, it provides water for the Kannagawa Hydropower Plant owned by the Tokyo Electric Power Company , also known as or TEPCO, is a Japanese electric utility holding company servicing Japan's Kantō region, Yamanashi Prefecture, and the eastern portion of Shizuoka Prefecture. This area includes Tokyo. Its headquarters are located in Uchisaiw .... The Minamiaiki dam is the higher of the two dams. When completed, the station will have the largest power output of any pump-storage power plant in the world at around 2.82 GW. Since 2005 Unit 1 with installed capacity of 470 MW is in commercial operation. Commercial operation of Unit 2 is planned in 2012, commercial operation of all six units as late as 2020. References Dams in Nagano Prefecture Rock-filled dams Dams completed in 2005 {{Japan-dam-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shinano River
The , known as the in its upper reaches, is the longest and widest river in Japan and the third largest by basin area (behind the Tone River and Ishikari River). It is located in northeastern Honshu, rising in the Japanese Alps and flowing generally northeast through Nagano Prefecture, Nagano and Niigata Prefecture, Niigata Prefectures before emptying into the Sea of Japan. History The Shinano River has a long history in Honshu, and along with other rivers in the region, has a significant effect on the geography and ecology of the area. Originally the Shinano River would have drained straight into an estuary-like Fukushima lagoon before making its way into the Sea of Japan after flowing down from the Japanese Alps. Over centuries of sediments being brought downstream, a marshy plain formed in the lagoon into what is currently the Echigo Plain. Estimates presented in 1993 place the amount of loose sediment in the river system at . The construction of diversion channels have li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minamiaiki
is a village located in Nagano Prefecture, Japan. , the village had an estimated population of 1,057 in 430 households,Minamiaiki Village official statistics and a of 16 persons per km². The total area of the village is . Geography Minamiaiki is located in mountainous eastern Nagano Prefecture, bordered by to the east. More than 90% of the village area is covered by mountains and forest, and the village is at an average altitude of between 1000 and 1200 meters. |
Dams In Nagano Prefecture
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Dams were used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minamiaiki Dam Uzumaku Hiroba Park
is a village located in Nagano Prefecture, Japan. , the village had an estimated population of 1,057 in 430 households,Minamiaiki Village official statistics and a of 16 persons per km². The total area of the village is . Geography Minamiaiki is located in mountainous eastern Nagano Prefecture, bordered by to the east. More than 90% of the village area is covered by mountains and forest, and the village is at an average altitude of between 1000 and 1200 meters. |
Pumped-storage Hydroelectricity
Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing. The method stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation. Low-cost surplus off-peak electric power is typically used to run the pumps. During periods of high electrical demand, the stored water is released through turbines to produce electric power. Although the losses of the pumping process make the plant a net consumer of energy overall, the system increases revenue by selling more electricity during periods of peak demand, when electricity prices are highest. If the upper lake collects significant rainfall or is fed by a river then the plant may be a net energy producer in the manner of a traditional hydroelectric plant. Pumped-storage hydroelectricity allows energy from intermittent sources (such as solar, wind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kannagawa Hydropower Plant
The Kannagawa Hydropower Plant (神流川発電所) is an under construction pumped-storage hydroelectric power plant near Minamiaiki in Nagano Prefecture and Ueno, Gunma, Ueno in Gunma Prefecture, Japan. The power plant utilizes the Minamiaiki River along with an upper and lower reservoir created by two dams, the upper Minamiaiki Dam and the lower Ueno Dam. The power station in between the two dams will contain six pump-generators for a total installed capacity of . Unit 1 commenced commercial operation in 2005 and Unit 2 in 2012. When completed, the plant will have the second-largest (after Bath County Pumped Storage Station) pumped-storage power capacity in the world. Construction In July 1993, the Kannagawa Hydropower Field Survey Office was initiated and in July 1995, the power plant was approved by the Electric Power Development Coordination Council. In May 1997, construction on the project began and by October 2003, the area behind the Ueno Dam was being inundated with wate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ueno Dam
Ueno Dam (上野ダム) is a concrete gravity dam in the Gunma Prefecture of Japan. The dam serves as the lower reservoir of the Kannagawa Hydropower Plant The Kannagawa Hydropower Plant (神流川発電所) is an under construction pumped-storage hydroelectric power plant near Minamiaiki in Nagano Prefecture and Ueno, Gunma, Ueno in Gunma Prefecture, Japan. The power plant utilizes the Minamiaiki Riv .... Because of the dams remote location deep in the hillside, no houses were submerged. Dams in Gunma Prefecture Dams completed in 2004 Gravity dams {{Japan-dam-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north toward the East China Sea, Philippine Sea, and Taiwan in the south. Japan is a part of the Ring of Fire, and spans Japanese archipelago, an archipelago of List of islands of Japan, 6852 islands covering ; the five main islands are Hokkaido, Honshu (the "mainland"), Shikoku, Kyushu, and Okinawa Island, Okinawa. Tokyo is the Capital of Japan, nation's capital and largest city, followed by Yokohama, Osaka, Nagoya, Sapporo, Fukuoka, Kobe, and Kyoto. Japan is the List of countries and dependencies by population, eleventh most populous country in the world, as well as one of the List of countries and dependencies by population density, most densely populated and Urbanization by country, urbanized. About three-fourths of Geography of Japan, the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nagano Prefecture
is a landlocked prefecture of Japan located in the Chūbu region of Honshū. Nagano Prefecture has a population of 2,052,493 () and has a geographic area of . Nagano Prefecture borders Niigata Prefecture to the north, Gunma Prefecture to the northeast, Saitama Prefecture to the east, Yamanashi Prefecture to the southeast, Shizuoka Prefecture and Aichi Prefecture to the south, and Gifu Prefecture and Toyama Prefecture to the west. Nagano is the capital and largest city of Nagano Prefecture, with other major cities including Matsumoto, Ueda, and Iida. Nagano Prefecture has impressive highland areas of the Japanese Alps, including most of the Hida Mountains, Kiso Mountains, and Akaishi Mountains which extend into the neighbouring prefectures. The abundance of mountain ranges, natural scenic beauty, and rich history has gained Nagano Prefecture international recognition as a world-class winter sports tourist destination, including hosting the 1998 Winter Olympics and a new ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embankment Dam
An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface and a dense, impervious core. This makes the dam impervious to surface or seepage erosion. Such a dam is composed of fragmented independent material particles. The friction and interaction of particles binds the particles together into a stable mass rather than by the use of a cementing substance. Types Embankment dams come in two types: the earth-filled dam (also called an earthen dam or terrain dam) made of compacted earth, and the rock-filled dam. A cross-section of an embankment dam shows a shape like a bank, or hill. Most have a central section or core composed of an impermeable material to stop water from seeping through the dam. The core can be of clay, concrete, or asphalt concrete. This type of dam is a good choice for sites wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Fill Dam
Rock most often refers to: * Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids * Rock music, a genre of popular music Rock or Rocks may also refer to: Places United Kingdom * Rock, Caerphilly, a location in Wales * Rock, Cornwall, a village in England * Rock, County Tyrone, a village in Northern Ireland * Rock, Devon, a location in England * Rock, Neath Port Talbot, a location in Wales * Rock, Northumberland, a village in England * Rock, Somerset, a location in Wales * Rock, West Sussex, a hamlet in Washington, England * Rock, Worcestershire, a village and civil parish in England United States * Rock, Kansas, an unincorporated community * Rock, Michigan, an unincorporated community * Rock, West Virginia, an unincorporated community * Rock, Rock County, Wisconsin, a town in southern Wisconsin * Rock, Wood County, Wisconsin, a town in central Wisconsin Elsewhere * Corregidor, an island in the Philippines also known as "The Rock" * Jamaica, an islan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minamiaiki, Nagano
is a village located in Nagano Prefecture, Japan. , the village had an estimated population of 1,057 in 430 households,Minamiaiki Village official statistics and a of 16 persons per km². The total area of the village is . Geography Minamiaiki is located in mountainous eastern Nagano Prefecture, bordered by to the east. More than 90% of the village area is covered by mountains and forest, and the village is at an average altitude of between 1000 and 1200 meters.[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
