What hydropower stations are there in the Yangtze River Basin?

Hydropower stations on the tributaries of the Yangtze River\x0d\The Yangtze River is the largest river in my country. It winds down from the roof of the world - the Qinghai-Tibet Plateau from west to east, with a drop of more than 6,000 meters. The Yangtze River has sufficient water and many tributaries. , water energy resources are very abundant. It is estimated that the total amount of water energy resources in the Yangtze River Basin is 216.8 million kilowatts, of which 197 million kilowatts can be developed. For thousands of years, the Yangtze River's rich water energy resources have been flowing in vain, and the Yangtze River's water energy resources have been developed on a large scale. In recent decades, the current hydropower stations in the Yangtze River Basin, in addition to the Gezhouba Water Conservancy Project that has been built on the main stream and the Three Gorges Project that is under construction, there are also large (installed capacity of more than 250,000 kilowatts) and medium-sized hydropower stations on its tributaries. There are nearly a hundred hydropower stations (between 25,000 kilowatts and 250,000 kilowatts). Most of the tributaries of the Yangtze River flow through mountainous and hilly areas. The terrain is complex and the population density is low. In addition, the mountains are high and the valleys are deep, which provide favorable conditions for building hydropower stations. Here we introduce the Yangtze River to everyone. Several famous large hydropower stations on the tributaries. \x0d\Yarong River - Ertan Power Station \x0d\The Yalong River originates from the southern foothills of Bayan Har Mountain, flows southward to the Jinsha River near Panzhihua City, with a total length of more than 1,500 kilometers and a drop of more than 3,800 meters. Ertan Hydropower Station is located on the lower reaches of the Yalong River, 33 kilometers away from the river mouth, and 46 kilometers away from Panzhihua City. The Ertan Hydropower Station began site selection and planning in September 1972. In 1983, a feasibility study report was submitted and passed the review of relevant national experts. In 1987, the construction of preliminary auxiliary projects and part of the main project was carried out. On September 14, 1991, the main body of the power station was completed. The project officially started, and the first unit was connected to the grid to generate electricity in August 1998. The entire project will be completed in 2000. Such a short construction period and such high efficiency are relatively rare at home and abroad. \x0d\ Ertan Hydropower Station is huge in scale. It is equipped with six 550,000-kilowatt hydraulic turbine units with an installed capacity of 3.3 million kilowatts and a power generation of 17 billion kilowatt hours. When completed, the installed capacity and power generation will exceed that of Gezhouba Hydropower Station, becoming It is the second largest hydropower station in my country after the Three Gorges Hydropower Station. The concrete double-curved arch dam of the Ertan Power Station is 240 meters high. There is no taller dam in Asia. On May 1, 1998, the Ertan Power Station lowered its sluice to store water. In July of that year, the flow rate of the Yalong River was There was a flood of 9,080 cubic meters per second. On August 10, the second largest flood front recorded in hydrological records appeared, with a flow rate of 10,200 cubic meters per second. The dam remained safe and sound despite the impact of the two flood peaks. \x0d\Dadu River - Gongzui Power Station \x0d\The Dadu River originates in Qinghai Province and flows into the Minjiang River in Leshan, Sichuan. It is the largest tributary of the Minjiang River. The total length of the Dadu River is only more than 1,000 kilometers, but the height difference is more than 4,000 meters. The water energy resource reserves reach more than 17 million kilowatts. Among the major tributaries of the Yangtze River, the Dadu River ranks first in terms of height difference and water energy resource reserves. The development of water energy resources on the Dadu River was also relatively early. The famous Gongzui Hydropower Station is located on the main stream of the Dadu River, about 90 kilometers away from the mouth of the Dadu River into the Min River. The dam site controls a watershed of 76,000 square kilometers, with a total installed capacity of 700,000 kilowatts. Construction officially started in March 1966 and was completed at the end of 1978. The annual power generation is close to 3.6 billion kilowatt hours. It is the second thermal power station in the southwest after Ertan Power Station. \x0d\33 kilometers below Gongzui Power Station is the Tongjiezi Power Station. Construction of the power station started in 1980, with an installed capacity of 600,000 kilowatts and an annual power generation of more than 3.2 billion kilowatt hours. \x0d\Wujiang——Wujiang Ferry Hydropower Station\x0d\The Wujiang River originates in the northwest of Guizhou Province and is more than 1,000 kilometers long. It is the longest tributary on the south (right) bank of the upper reaches of the Yangtze River. The drop from the source to the mouth of the river exceeds 2,000 meters. The water energy resources contained in the main tributaries and tributaries exceed 10 million kilowatts. The area where the Wujiang River flows has complex terrain, numerous tributaries, and abundant rainfall. The Wujiang River water energy resources have been developed since the late 1950s. After decades of construction, the Puding , Dongfeng, Wujiangdu and Maotiaohe cascade power stations and a series of hydropower engineering facilities, the largest of which is the Wujiangdu Hydropower Station.

\x0d\ Wujiangdu Hydropower Station is located 3 kilometers upstream of Wujiangdu Town, Zunyi County, Guizhou Province. The river valley at the dam site is in a typical V-shape. The power station dam is 165 meters high and 368 meters long. Construction began in 1974 and was completed in 1979. One unit was put into operation, and all were completed in 1983, with a total installed capacity of 630,000 kilowatts, and room for expansion of more than 400,000 kilowatts. The construction of the power station is beneficial to both flood control and navigation. \x0d\Qingjiang——Geheyan Hydropower Station\x0d\The Qingjiang River originates from Lichuan City, Hubei Province, and flows into the Yangtze River near Yichang. The total length is 425 kilometers. The total drop from the river source to the river mouth is 1,430 meters. The Geheyan Hydropower Project is located 9 kilometers upstream of Changyang County, the mountains on both sides of the river here are more than 300 meters higher than the river. The right bank is a steep overhanging rock. Residents on the left bank call it "Geheyan". Construction of the Geheyan Power Station began in 1987 and in 1995 All completed, the dam is 653 meters long, the maximum dam height is 151 meters, the ground elevation of the dam top is 206 meters, the installed capacity is 1.2 million kilowatts, and the annual power generation is more than 3 billion kilowatt hours. \x0d\After the Geheyan Hydropower Project was completed, it played a huge role in flood control. It is calculated that when the Qingjiang River floods enter the Yangtze River, the maximum water volume can account for 15% of the total flow of the Yangtze River near Yichang. For every 1,000 cubic meters of increase in Qingjiang River flow, the Jingjiang River section will The water level will rise by 8 to 10 centimeters. In 1998, the water level in the Jingjiang River remained high. From August 7 to 8, the water level in Shashi rose to 44.95 meters (if it exceeds 45 meters, the Jingjiang flood diversion project may be started), Geheyan The water inflow from the upstream reaches 5,000 cubic meters per second, and the water level rises to 203 meters, exceeding the warning level by 11.8 meters. In order to prevent the Qingjiang River flood peak from meeting the Yangtze River mainstream flood peak, the reservoir controls the water release volume between 1,000 and 2,500 cubic meters per second. , effectively reducing the peak flow of the Jingjiang River. Although the instantaneous water level of the reservoir rose to only about 2 meters from the top of the dam, the dam was safe and sound. In addition, Geheyan and the later built Gaozhou Dam also improved the navigation conditions of the Qingjiang River, extending the navigation mileage of the Qingjiang River from the original 109 kilometers to 153 kilometers, and the carrying capacity of ships increased from 20 tons to 300 tons. . \x0d\Han River - Danjiangkou Power Station \x0d\The Han River is 1,577 kilometers long and is the longest river among the tributaries of the Yangtze River. The height difference from the source to the mouth of the Han River is more than 1,900 meters. The water energy resource reserves are more than 10 million kilowatts, of which more than 6 million kilowatts can be developed, and they are concentrated in Danjiangkou and above areas in Hubei. Danjiangkou Hydropower Station was built in 1958, and all units were put into power generation in 1973. Subsequently, the initial project was completed. The entire project will not be completed until the middle route of the South-to-North Water Diversion Project is implemented. The dam of Danjiangkou Power Station is 97 meters high, with a total installed capacity of 900,000 kilowatts and an annual power generation of 3.8 billion kilowatt hours. \x0d\ In addition to power generation, the Danjiang Water Conservancy Project also has comprehensive benefits in flood control, irrigation, shipping, etc., especially in flood control and disaster reduction. The Hanjiang River area has always been one of the areas where flood disasters occur frequently in my country. Although the average flow rate of the Han River over the years is only 1,640 cubic meters/second, the water volume in the flood season is very large. Since the construction of the Danjiang Reservoir, it has successfully intercepted 68 flood peaks with a flow rate of more than 10,000 cubic meters/second in the upper reaches of the Han River. The cumulative flood prevention and disaster reduction benefits Reaching 22.25 billion yuan, it is particularly worth mentioning that when the sixth flood peak went straight to Wuhan in August 1998, the peak inflow of the Danjiang Reservoir reached a maximum of 18,000 cubic meters per second. In order to stagger the peak of the Yangtze River, the reservoir gate The 96-hour lockdown effectively eased the pressure of the flood on Wuhan. \x0d\Yuanjiang——Wuqiangxi Power Station\x0d\The Yuanjiang River is the river with the richest water energy resources in the Dongting Lake system in the middle reaches of the Yangtze River. Its main stream is more than 1,000 kilometers long, with a drop of nearly 1,500 meters. It is planned to build 11 steps on the main stream. Power stations, the largest of which is Wuqiangxi Power Station, which is 73 kilometers from Yuanling County, Hunan Province, and 130 kilometers from Changde City. The highest point of the dam is 87.5 meters, and the longest point of the dam crest is 724 meters. , with a total installed capacity of 1.2 million kilowatts and an annual power generation of more than 5.3 billion kilowatt hours.

The construction of this project has raised the flood control standard of the embankment in the lower reaches of the Yuanjiang River from a return event of 5 years to a return event of 20 years. At the same time, the flow rate of the downstream dry season has increased to 390 cubic meters per second, and the navigation mileage of the upper and lower reaches has been improved by 220,000. rice. \x0d\\x0d\Yangtze River Mainstream Hydropower Station\x0d\Gezhouba Hydropower Station\x0d\ is located in Yichang City, Hubei Province, 3km below the Nanjinguan Pass at the outlet of the Yangtze River Xiling Gorge. It is the first large-scale hydropower project built on the Yangtze River Mainstream\x0d\. It is the counter-regulation and shipping cascade of the Three Gorges Project. \x0d\The watershed area controlled above the dam site is 1 million km2, which is 55.5% of the total Yangtze River watershed area. The multi-year average flow at the dam site is 14300m3/s, and the average annual runoff is 451 billion m3. The average annual sediment transport volume is 530 million tons, and the average sediment content is 12kg/m3. \x0d\90% of the sediment is concentrated in the flood season. \x0d\The Gezhouba Project has comprehensive benefits such as power generation and waterway improvement. The installed capacity of the power station is 2.715 million kW, with a guaranteed output of 768,000 kW when operating alone, and an annual power generation of 15.7 billion kW·h (after the completion of the Three Gorges Project, the guaranteed output can be increased to 1.58 million to 1.94 million kW, with annual power generation The capacity can be increased to 16.1 billion kW·h). The power station is integrated into the central China power grid with 500kv and 220kv transmission lines, and transmits 1.2 million kW of electricity to Shanghai, which is 1,000km away, through a 500kV DC transmission line. \x0d\The backwater of the reservoir area is 110-180km, which improves the shipping conditions of the Sichuan River. The total storage capacity of the reservoir is 1.58 billion m3. Due to shipping restrictions, there will be no flood regulation or peak shaving in the near future. After the completion of the Three Gorges Project, it will be able to counteract the uneven flow due to flood control and release of the Three Gorges Project, with a counter-regulation storage capacity of 85 million m3. \x0d\\x0d\The Three Gorges Hydropower Station, also known as the Three Gorges Project, Three Gorges Dam, and Three Gorges Reservoir, is located on the main stream of the Yangtze River from Chongqing City, China to Yichang City, Hubei Province. The dam is located in Zigui County, Zigui County, within the Xiling Gorge of the Three Gorges. -ping, and forms a cascade dispatching power station with the Gezhouba Hydropower Station not far downstream. It is the largest hydropower station in the world and the largest engineering project ever built in China. The many issues such as immigration and environment caused by it have always caused huge controversy from the moment it was started. Accompany each other.