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Longkaikou Dam
The Longkaikou Dam is a gravity dam on the Jinsha River in Dali Bai Autonomous Prefecture, Yunnan province, China. The dam has a height of and was constructed with roller-compacted concrete. Construction on the dam began in 2007, the river was diverted in January 2009 but construction was briefly halted in June 2009 by the Ministry of Environmental Protection after it was being constructed without approval. On 25 November 2012 the reservoir was impounded and the first of five 360 MW Francis turbine-generators was commissioned on 21 May 2013. The last was commissioned on 29 November 2013. The dam was expected to displace 2,000 people. The dam also supports a fish proliferation system. See also * List of power stations in China References {{Yangtze dams , dam=Longkaikou Dam, downriver=Ludila Dam, upriver=Jinanqiao Dam The Jinanqiao Dam or Jin'anqiao Dam (, ''meaning "golden and peace bridge"'') is a concrete gravity dam on the Jinsha River southeast of Lijiang City in Yu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and borders fourteen countries by land, the most of any country in the world, tied with Russia. Covering an area of approximately , it is the world's third largest country by total land area. The country consists of 22 provinces, five autonomous regions, four municipalities, and two Special Administrative Regions (Hong Kong and Macau). The national capital is Beijing, and the most populous city and financial center is Shanghai. Modern Chinese trace their origins to a cradle of civilization in the fertile basin of the Yellow River in the North China Plain. The semi-legendary Xia dynasty in the 21st century BCE and the well-attested Shang and Zhou dynasties developed a bureaucratic political system to serve hereditary monarchies, or dyna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jinanqiao Dam
The Jinanqiao Dam or Jin'anqiao Dam (, ''meaning "golden and peace bridge"'') is a concrete gravity dam on the Jinsha River southeast of Lijiang City in Yunnan Province, China. The purpose of the dam is hydroelectric power production and flood control. Construction The Jinanqiao project was approved in August 2003 and construction began in 2005. By December of that year, the river was diverted and the construction of the actual dam began in January 2006. By February 2007, the foundation had been excavated and concrete pouring began. In June 2010, the dam's first generator was operational, the last was commissioned in 2011. Design The dam is a tall and long gravity dam composed of of roller-compacted concrete. The dam's crest elevation is above sea level and it withholds a reservoir with a normal storage level of ASL. Of the reservoir's storage, is active or "useful". The dam's spillway consists of five x openings which have a maximum flood discharge capacity of . To pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Infrastructure Completed In 2013
In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J). Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, and the internal energy contained within a thermodynamic system. All living organisms constantly take in and release energy. Due to mass–energy equivalence, any object that has mass when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Dams
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. Gravity dams are designed so that each section of the dam is stable and independent of any other dam section. Characteristics Gravity dams generally require stiff rock foundations of high bearing strength (slightly weathered to fresh), although in rare cases, they have been built on soil foundations. The bearing strength of the foundation limits the allowable position of the resultant force, influencing the overall stability. Also, the stiff nature of the gravity dam structure is unforgiving to differential foundation settlement, which can induce cracking of the dam structure. Gravity dams provide some advantages over embankment dams, the main advantage being that they can tolerate minor over-topping flows without damage, as the concre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams On The Jinsha River
The Jinsha River (, Tibetan: Dri Chu, འབྲི་ཆུ) is the Chinese name for the upper stretches of the Yangtze River. It flows through the provinces of Qinghai, Sichuan, and Yunnan in western China. The river passes through Tiger Leaping Gorge. It is sometimes grouped together with the Lancang (upper Mekong) and Nu (upper Salween) as the ''Sanjiang'' ("Three Rivers") area, part of which makes up the Three Parallel Rivers of Yunnan Protected Areas. The river is important in generating hydroelectric power, and several of the world's largest hydroelectric power stations are on the Jinsha river. Name The river was first recorded as the Hei (, ''Hēishuǐ'', lit. "Blackwater") in the Warring States' "Tribute of Yu". It was described as the Sheng ( t , s , ''Shéngshuǐ'', "Rope River") in the Han-era Classic of Mountains and Seas. During the Three Kingdoms, it was known as the Lu ( t , s , ''Lúshuǐ''). Owing to earlier romanization sys ... [...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 al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams Completed In 2013
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] |
Hydroelectric Power Stations In Yunnan
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludila Dam
The Ludila Dam(鲁地拉水电站 in Chinese) is a gravity dam on the Jinsha River near Lijiang in Yunnan province, China. The primary purpose of the dam is hydroelectric power generation and it will support a 2,160 MW power station. Construction on the dam began in 2007 and was briefly halted in June 2009 by the Ministry of Environmental Protection after it was being constructed without approval. On 13 June 2013 the dam's first generator became operational. In May 2014 reports surfaced that the dam and been damaged or was structurally unsound, forcing engineers to draw down the reservoir level and leaving the power station inoperable. An estimated 16,900 people were relocated after its construction. See also * List of power stations in China The following page lists some power stations in mainland China divided by energy source and location. Coal Nuclear Hydroelectric Solar Tide Wind By location The following pages list the major power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roller-compacted Concrete
Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for Portland cement. The partial substitution of fly ash for Portland Cement is an important aspect of RCC dam construction because the heat generated by fly ash hydration is significantly less than the heat generated by Portland Cement hydration. This in turn reduces the thermal loads on the dam and reduces the potential for thermal cracking to occur. RCC is a mix of cement/fly ash, water, sand, aggregate and common additives, but contains much less water. The produced mix is drier and essentially has no slump. RCC is placed in a manner similar to paving; the material is delivered by dump trucks or conveyors, spread by small bulldozers or specially modified asphalt pavers, and then compacted by vibratory rollers. In dam construction, roll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Power Stations In China
The following page lists some power stations in mainland China divided by energy source and location. Coal Nuclear Hydroelectric Solar Tide Wind By location The following pages list the major power stations in China by province: * List of major power stations in Anhui * List of major power stations in Beijing * List of major power stations in Chongqing * List of major power stations in Fujian province * List of major power stations in Gansu * List of major power stations in Guangdong * List of major power stations in Guangxi * List of major power stations in Guizhou * List of major power stations in Hainan province * List of major power stations in Hebei province * List of major power stations in Heilongjiang * List of major power stations in Henan province * List of power stations in Hong Kong * List of major power stations in Hubei province * List of major power stations in Hunan province * List of major power stations in Inner Mongolia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
