Xiangjiang water conservancy project

In the planning of Xiangjiang River basin, the main stream is developed in four levels, namely, four cascade power stations: Shuiyuanba, Jiange, Jiaokou and Huangyutang. The dam of Jiaokou Power Station is 52.5 meters high, with a total storage capacity of 54 million cubic meters. The storage capacity of Li Xing is 6,543.8+09.2 million cubic meters, with 3 installed units and a total installed capacity of 6,543.8+08.9 million kilowatts. 1990 started construction, and two units were installed in the first phase, with the installed capacity of 12600 kw, and 1997 was completed. The water conservancy project has built new stations in the north and south areas-mountain ponds, reservoirs and Nanbai electric irrigation network; The medium-sized reservoirs that have been built include Houshuihe Reservoir and Meijiang Reservoir. Small (1) reservoirs include Luo 'anjiang Reservoir, Yongle Reservoir, Wan Li Reservoir and Sanba Reservoir. The built urban water supply reservoirs include Beijiao Reservoir, Beiguan Reservoir, Hongyan Reservoir and Nanjiao Reservoir. There are a number of high-lift hydraulic pump stations and small hydropower stations in the middle reaches of the main stream. The total effective irrigation area of the whole basin is 564,800 mu. In addition, the flood control projects under construction include Hailong Reservoir (medium-sized reservoir and water supply) and Xiangjiang River regulation project in Zunyi City. Nanjiao Reservoir, located about 80 meters from the exit of Laolongtang in the middle and lower reaches of Luojiang River, was built and managed by Zunyi Water Supply and Drainage Company (formerly Zunyi Water Supply Company). The reservoir was built at the end of 1990, which is the water supply source for Nanjiao Water Plant and Zunyi Thermal Power Plant. The reservoir is designed as a medium-sized reservoir with a total storage capacity of 2 1.58 million cubic meters. The dam is a masonry hyperbolic arch dam with a maximum dam height of 39.7 meters. The project is constructed in two phases, and the normal water level in the first phase is 842.5 meters. The corresponding storage capacity is 2.6 million cubic meters, the maximum dam height is 28 meters and the annual water supply is 8 million cubic meters.

Beijiao Reservoir is located in Shijutang in the lower reaches of Horn River. It is formed by heightening a four-span multi-arch dam built in 1969, and the small (I) type is built in 1982. The dam is a masonry gravity dam with the maximum dam height of17.25m. The normal water level of the reservoir is 84 1.25m, corresponding to the storage capacity of 1.24 million cubic meters, which is the water supply source for the northern suburb water plant. The annual water supply is19.26 million cubic meters.

Hongyan Reservoir is located in the middle reaches of Luojiang River, a tributary of Xiangjiang River, 200 meters away from Xiangkouchang. The reservoir was originally designed as a medium-sized reservoir, mainly responsible for urban water supply. Construction started at Hongyan dam site on 1958. Due to geological problems, it was moved to the dam site of Xiangkouchang on 1959. The original designed maximum dam is 42.5 meters high and has a storage capacity of 54.2 million cubic meters, which was stopped due to the adjustment of the national economy in the early 1960s. 1976 to reduce the scale of agricultural irrigation, the reservoir was redesigned, 1978 was started, and 1979 was stopped due to the national adjustment plan. After the 1980s, due to the increasingly serious water shortage in Zunyi City, it was decided to continue the construction, which was designed by Zunyi Hydropower Survey and Design Institute in 19 1 year, and the normal storage level of1989.19898989896 was set at 887 meters, with a corresponding storage capacity of 565438+ 10,000. It is a small reservoir, whose main function is water supply and irrigation. The dam is a masonry arch gravity dam with a maximum dam height of 26.3m and an annual water supply of180,000 cubic meters. Zunyi flood control project

1957, 1969 built Malaoyan Reservoir and Beijiao Reservoir on Niujiao River, 1990 and 1992 built Nanjiao Reservoir and Hongyan Reservoir on Luojiang River, and 1956 built Heitangzi Reservoir with a total storage capacity of 365438. 1974, in order to increase the flow of Xiangjiang river, the river channel was widened and bank protection was built along the river. 1982 Xiangjiang river comprehensive management. The treatment projects include river cleaning, building stone revetment, building sewage intercepting ditch and building cross-strait highway. The average height of the stone revetment is 7m, the total length is 1 1 km, and the average width of the river surface is about 50m. There are 9 bridges including Wan Li Bridge and Tianxing Bridge. In order to maintain a certain water level in urban rivers and beautify the urban environment, five dams were built along the river. Through regulation, the flood discharge capacity can reach once in 20 years. 1In September, 1995, Zunyi Municipal Government entrusted Guizhou Water Resources and Hydropower Survey and Design Institute to carry out flood control planning for Zunyi City, and adopted the scheme of "upper storage, middle discharge and lower discharge". From February 1998, the new Xiangjiang River regulation project was implemented, including urban river regulation and Hailong Reservoir construction. After the completion of Hailong Reservoir and Xiangjiang River Regulation Project, the flood control standard along Xiangjiang River in Zunyi City will be raised to the level of 100.

Hailong reservoir

Hailong Reservoir is located in Hailong Town, northwest of Honghuagang District, Zunyi City. It is a medium-sized reservoir mainly for flood control and water supply for urban areas. The dam hub project is designed according to the flood control standard of 100 with a total storage capacity of 29.6 million cubic meters and flood control storage capacity of12.8 million cubic meters. The project is divided into two phases, the first phase is flood control project and the second phase is water supply project. The estimated total investment of Hailong Reservoir Project is128140,000 yuan. The first phase project of Hailong Reservoir started on 1999 1 and was fully completed in April 2002. In September, 2003, the project officially passed the phased water storage acceptance and put into operation, with a total investment of 1 1004 yuan. The second phase water supply project was completed in February 2004, with a total investment of 565,438+740,000 yuan. Hailong Reservoir Project, together with flood control project and other engineering measures in Zunyi City, forms flood control project system in Zunyi City, which can prevent flood with a return period of 100, protect the urban area of 23.8 square kilometers, and reduce the economic loss by 654.38+05.88 million yuan on average every year. After the project is fully completed and put into operation, the daily water supply capacity can reach 98,000 tons/day, which is of great significance for flood control safety and alleviating water supply shortage in Zunyi downtown area. Houshuihe Reservoir, formerly known as * * * clear lake Reservoir, is located in Puchang Town, Suiyang County, 28km west of Suiyang County, and upstream of Houshuihe, a secondary tributary of Wujiang River (a tributary of Xiangjiang River). The drainage area above the dam site is 92 square kilometers. The water retaining structure is a masonry gravity dam with a maximum dam height of 42.5 meters and an open flow at the top. Total storage capacity15.9 million cubic meters and effective storage capacity15.4 million cubic meters. The total length of the canal is 16 1 km, of which the total trunk canal is 10.26 km and the south, north and middle trunk canals are 78.56 km. The main buildings in the canal system include 23 inverted siphon pipes with a length of 1285 1m, a tunnel with a length of 3399. 1m and a tunnel with a length of 1 1 m. The designed irrigation area of the project is 50,547 mu, and the effective irrigation area is 49,600 mu. There are two generators behind the left bank dam, with a total installed capacity of 400 kilowatts. 1958 started, 1974 The dam was completed in March, and the water storage began to benefit. After two matching renovations (1976 and 1997), the irrigation efficiency reached 5 1349 mu, and the newly built 19249 mu was added, which was an improvement of 7899 mu.

Meijiang Reservoir, formerly known as Liangfengdong Reservoir, is a project with comprehensive benefits such as irrigation, flood control, power generation and aquaculture. It is located in the upper reaches of Meijiang River in the northeast of Meitan County, 35 kilometers away from the county seat, and the drainage area above the dam site is 208 square kilometers. The water retaining structure is a masonry gravity dam with a maximum dam height of 33.3 meters, a total storage capacity of 210.5 million cubic meters and an effective storage capacity of 65,438+. The total length of the canal is 262.65km, including 2.5km of the main canal, 37.5km of the east main canal, 40km of the west main canal and 182.65km of the branch canal. The designed irrigation area is 57 1 1,000 mu, and the effective irrigation area is 48,500 mu. In addition to irrigation, three generators are installed behind the dam, with a total installed capacity of 750 kilowatts and an average annual power generation of 6,543,800+0.5 million kWh. Construction started in March 1958, and the dam was basically completed in February 1959. 1960 in may, the west main canal was 87% completed, and the reservoir began to store water. It was completed and accepted in May 1965. The dam was raised twice from 1966 winter to 1967 spring and 1976 winter to 1977 spring to reach the designed dam height. By 1998, the installed capacity of the power station will reach 750 kilowatts.