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Maerdang Dam
The Maerdang Dam is a concrete-face rock-fill dam on the upper Yellow River in Maqên County, Qinghai Province, China. Construction on the dam began in 2011 and its hydropower station was originally expected to be operational in 2018. On 13 November 2013, the river was successfully diverted around the construction site. The complex is located at an elevation of over 3,000 m AMSL, and its construction presented extreme challenges due to the high altitude, cold climate and lower oxygen level, which delayed its completion. Located in a nature reserve, the construction of the hydropower station required measures aimed to mitigate its impact on local wildlife, including fish lifts that help fish migrate upstream. The power plant went into full operation as the last one of its five turbines was successfully connected to the power grid on December 31, 2024. The station is operated by CHN Energy, a state-owned energy enterprise and has a total installed capacity of 2.32 GW. Maerdang h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maqên County
Maqên or Maqin County is a county of Qinghai Province, China. It is under the administration of Golog Tibetan Autonomous Prefecture. Name The county is named for Anyê Maqên, the Tibetan name for a revered local mountain. Administrative divisions Maqên is divided into two towns and six townships: Climate Maqên County has a subalpine climate (Köppen ''Dwc'') bordering on an alpine climate (''ETH''). See also * List of administrative divisions of Qinghai Qinghai, a province of the People's Republic of China, is made up of the following administrative divisions. Administrative divisions All of these administrative divisions are explained in greater detail at Administrative divisions of the People ... * Golog Maqin Airport References County-level divisions of Qinghai Golog Tibetan Autonomous Prefecture {{Qinghai-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Grid
''Power Grid'' is the English-language version of the second edition of the multiplayer German-style board game ''Funkenschlag'', designed by Friedemann Friese and first released in 2004. ''Power Grid'' was released by Rio Grande Games. In the game, each player represents a company which owns power plants and tries to supply electricity to cities. During the game, players bid on power plants and buy resources to provide electricity to the growing number of cities in their network. Background ''Power Grid'' was developed from ''Funkenschlag'', the original game, which had players draw their networks with crayons instead of playing on a fixed map. This and other changes were made when Friedemann Friese reworked the game. The new game is called ''Funkenschlag'' in the German market, but is sold under other names elsewhere. Game play The game comes with a double-sided board with a map of the United States on one side and Germany on the other. Each map has six regions, conta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams Under Construction In China
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 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. Ancient dams were built in Mesopotamia and the Middle East for water control. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. Egyptians also built dams, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams On The Yellow River
The Yellow River, also known as Huanghe, is the second-longest river in China and the sixth-longest river system on Earth, with an estimated length of and a watershed of . Beginning in the Bayan Har Mountains, the river flows generally eastwards before entering the long Ordos Loop, which runs northeast at Gansu through the Ordos Plateau and turns east in Inner Mongolia. The river then turns sharply southwards to form the border between Shanxi and Shaanxi, turns eastwards at its confluence with the Wei River, and flows across the North China Plain before emptying into the Bohai Sea. The river is named for the yellow color of its water, which comes from the large amount of sediment discharged into the water as the river flows through the Loess Plateau. The Yellow River basin was the birthplace of ancient Chinese civilization. According to traditional Chinese historiography, the Xia dynasty originated on its banks around 2100 BC; Sima Qian's ''Shiji'' () record that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams In China
Dams and reservoirs in China are numerous and have had a profound effect on the country's development and people. According to the World Commission on Dams in 2000, there were 22,104 dams over the height of operating in China. Of the world's total large dams, China accounts for the most – of them; of which are used for irrigation. Accordingly, the oldest in China still in use belongs to the Dujiangyan Irrigation System which dates back to 256 BC. In 2005, there were over 80,000 reservoirs in the country and over 4,800 dams completed or under construction that stands at or exceed in height. As of 2007, China is also the world's leader in the construction of large dams; followed by Turkey, and Japan in third. The tallest dam in China is the Jinping-I Dam at , an arch dam, which is also the tallest dam in the world. The largest reservoir is created by the Three Gorges Dam, which stores 39.3 billion m3 (31,900,000 acre feet) of water and has a surface area of . Three Gorges is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Tallest Dams In China
The tallest dams in China are some of the tallest dams in the world. Nearly 22,000 dams over in height – about half the world's total – have been constructed in China since the 1950s. Many of the tallest are located in the southwestern part of the country (Guizhou, Sichuan, Yunnan) on rivers such as the Mekong, the Yangtze, and its upper stretch (Jinsha River) and tributaries ( Yalong, Dadu, Min and Wu). The Yellow River in the western part of the country also hosts several among the tallest. Purposes for these high structures include flood control, irrigation and, predominantly, hydroelectric power. While beneficial, many throughout the country have been criticized for their effects on the environment, displacement of locals and effect on transboundary river flows. Currently, the country's and world's tallest, Jinping-I Dam, an arch dam high, is located in Sichuan. The tallest embankment dam in China is the Nuozhadu Dam in Yunnan. The country's highest gravity dam is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Dams And Reservoirs In China
Dams and reservoirs in China are numerous and have had a profound effect on the country's development and people. According to the World Commission on Dams in 2000, there were 22,104 dams over the height of operating in China. Of the world's total large dams, China accounts for the most – of them; of which are used for irrigation. Accordingly, the oldest in China still in use belongs to the Dujiangyan Irrigation System which dates back to 256 BC. In 2005, there were over 80,000 reservoirs in the country and over 4,800 dams completed or under construction that stands at or exceed in height. As of 2007, China is also the world's leader in the construction of large dams; followed by Turkey, and Japan in third. The tallest dam in China is the Jinping-I Dam at , an arch dam, which is also the tallest dam in the world. The largest reservoir is created by the Three Gorges Dam, which stores 39.3 billion m3 (31,900,000 acre feet) of water and has a surface area of . Three Gorges is al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Tallest Dams In The World
This is a list of the tallest dams in the world above in height. The tallest dam in the world is the Jinping-I dam, an arch dam in China at . The tallest embankment dam and the second tallest dam in the world is the Nurek Dam in Tajikistan, built by USSR. The tallest gravity dam is the high Grande Dixence Dam in Switzerland. The tallest natural dam, the Usoi Dam in Tajikistan, is higher than the tallest existing man-made dam. Existing Under construction Gallery File:BarrageDeLaGrandeDixenceFaceValee.JPG, The Grande Dixence Dam in Switzerland File:Enguri Dam, Georgia.jpg, The Inguri Dam in Georgia File:VajontDiga.jpg, The Vajont Dam in Italy File:Tehri dam india.jpg, The Tehri Dam in India File:MicaDam.JPG, The Mica Dam in Canada File:Саяно-Шушенская ГЭС.jpg, The Sayano Shushenskaya Dam in Russia File:OrovilleDam.jpg, The Oroville Dam in the United States File:El Cajon Dam Honduras.jpg, The El Cajón Dam in Honduras File:Bhakra Dam Aug 15 200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbine
A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced can be used for generating electrical power when combined with a generator.Munson, Bruce Roy, T. H. Okiishi, and Wade W. Huebsch. "Turbomachines." Fundamentals of Fluid Mechanics. 6th ed. Hoboken, NJ: J. Wiley & Sons, 2009. Print. A turbine is a turbomachine with at least one moving part called a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor. Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Modern steam turbines frequently employ both reaction and impulse in the same unit, typically varying the degree of reaction and impulse from the blade root to its periphery. History Hero of Alexandria demonstrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golog Tibetan Autonomous Prefecture
Golog (Golok or Guoluo) Tibetan Autonomous Prefecture ( zh, c=果洛藏族自治州 , p=Guǒluò Zàngzú Zìzhìzhōu; ) is an autonomous prefecture occupying the southeastern corner of Qinghai province, China. The prefecture has an area of and its seat is located in Maqên County. Due to its special geographical location and natural environment, the entire autonomous preference has been included in the Chinese largest natural environmental protection area — the Sanjiangyuan National Park. Geography Golog Prefecture is located in the southeastern part of Qinghai, in the upper basin of the Yellow River. Gyaring Lake and Ngoring Lake on the western edge of the prefecture are considered to be the source of the Yellow River. However, these lakes do receive water from rivers that flow from locations even further west, in Qumarleb County of the Yushu Tibetan Autonomous Prefecture. The lay of the land of the prefecture is largely determined by the Amne Machin mountain range ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Lift
A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon, is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as movements of potamodromous species. Most fishways enable fish to pass around the barriers by swimming and leaping up a series of relatively low steps (hence the term ''ladder'') into the waters on the other side. The velocity of water falling over the steps has to be great enough to attract the fish to the ladder, but it cannot be so great that it washes fish back downstream or exhausts them to the point of inability to continue their journey upriver. History Written reports of rough fishways date to 17th-century France, where bundles of branches were used to make steps in steep channels to bypass obstructions. A 1714 construction of an old channel bypassing a dam, "originally cut for the passage of fish up and down the river", is mention ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AMSL
Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and historic measurement periods. Climate change and other forces can cause sea levels and elevations to vary over time. Uses Elevation or altitude above sea level is a standard measurement for: * Geographic locations such as towns, mountains and other landmarks. * The top of buildings and other structures. * Mining infrastructure, particularly underground. * Flying objects such as airplanes or helicopters below a Transition Altitude defined by local regulations. Units and abbreviations Elevation or altitude is generally expressed as "metres above mean sea level" in the metric system, or " feet above mean sea level" in United States customary and imperial units. Comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
