Overview of Shanmei Reservoir Project

Shanmei Reservoir was built in Jiudu Town, Nan 'an City, Quanzhou City, Fujian Province 1958 (Jiudu Town belongs to Rocket People's Commune). The dam was located in Shanmei Village, Jiudu (submerged at the bottom of the reservoir), so it was named Shanmei Reservoir. Rainwater storage area 1.023 square kilometers, accounting for 53.4% of the area of Dongxihe River basin, with a total storage capacity of 655 million cubic meters. It is a large-scale reservoir project which is mainly based on irrigation, combined with comprehensive utilization of flood control and power generation. The average inflow of the reservoir for many years is 65.438+0.4 billion cubic meters, the normal water level is 95 meters, and the corresponding storage capacity is 395 million cubic meters. The minimum working water level for power generation is 80 meters, and the regulated storage capacity is 207.7 million cubic meters. Dead storage capacity is less than 60 meters (0.10.90 billion cubic meters).

Shanmei Reservoir Project started on 1958. 1April, 959, in order to implement the basic construction policy of "concentrating efforts and ensuring key points", Shanmei Reservoir was temporarily suspended as a reserved project according to the instructions of the provincial prefectural party committee. At the beginning of 1960, the Shanmei Reservoir Project started for the second time. At the end of the year, due to the temporary economic difficulties in the country, the project was temporarily suspended. From 65438 to 0967, Shanmei Reservoir Project was included in the national capital construction plan. In July of the same year, construction of the dam started, and the state invested 50 million yuan.

1970 65438+In February, Fujian Provincial Party Committee put forward opinions on speeding up the construction of Shanmei Reservoir. In March of the following year, the core leading group of Jinjiang District Revolutionary Committee strengthened its leadership over Shanmei Reservoir and established the core leading group of Shanmei Reservoir Party. By the beginning of 1 1, the construction site was composed of 23,843 people from four key militia groups of 88 companies of various professional construction companies. The broad masses of militiamen, workers and technicians fought day and night and devoted themselves to engineering construction.

1July, 972, the dam project was completed. On September 30th, the power station 1 unit was successfully debugged in the regional power grid and put into operation. On September 22nd of the following year, the trial operation of Unit 2 of the hydropower station was successfully connected to the grid for power generation.

At that time, the steep slope section of the spillway was cancelled and changed to an unlined pier 300 meters below. During the flood seasons of 1974 and 1975, flood discharge was tried twice, with the maximum flood discharge of 700 cubic meters per second and the downstream earth and stone scouring of 300,000 cubic meters. Sediment blocks the downstream river, and the tail water level of the power station rises 1 m, which affects power generation. The hub building consists of main dam, auxiliary dam, water conveyance tunnel and underground power station. The foundation of the main dam is composed of quartzite and granite, and the design seismic intensity is 8 degrees. The key project * * * completed 2,358,200 cubic meters of earth and stone (including dam filling 1.59 1.900 cubic meters, spillway excavation 5 1.250 cubic meters), stone work 1.0595 cubic meters, and 46,300 cubic meters of concrete. * * * The investment is 44,975,700 yuan.

The main dam is an earth-rock dam with clay core wall, with a dam height of 73m (before dam protection and reinforcement), corresponding to the elevation of the dam top 105.5m, the dam top length of 305m, the width of 8m, and the maximum dam bottom width of 312.8m. Curtain grouting makes the foundation impervious. The auxiliary dam is near the left end of the main dam, and it is a slope protection type, with a slope protection height of 40m, a top width of 10m and a length of 100m.

The spillway is located in the valley 300 meters away from the left bank. Before the dam protection and reinforcement, it was an open wide-topped weir with an elevation width of 56 meters. There is a water-filled rubber dam on the weir, which is 56 meters long and 5 meters high. At the end is a nose sill at an altitude of 84.5 meters.

The water conveyance tunnel is located on the right bank, and its main tunnel is also used for construction diversion, flood discharge and water diversion for power generation, with a length of 303.8m and a diameter of 7m, followed by a drainage tunnel with a length of 2 13m. The maximum designed flood discharge of the tunnel is 595 cubic meters per second. Shan Mei Irrigation District is one of the 42 large-scale irrigation districts with an area of 500,000 ~ 6,543.8+0,000 mu in China, and it is the only large-scale irrigation district in Fujian Province that irrigates more than 500,000 mu. The original planned irrigation area includes 902 brigades of 48 communes (farms) in Hui 'an, Jinjiang, Nan 'an and Quanzhou, with cultivated land area of 6,543.8+0.3434 million mu, of which 607,000 mu can be irrigated by original water conservancy (there are 34 reservoirs with original storage capacity of 6,543.8+0.000 cubic meters and total storage capacity of 2,665.438+0.000 cubic meters).

The master plan of Shan Mei Irrigation District is to take Shanmei Reservoir as the backbone, give full play to the role of the original water conservancy projects, make full use of runoff sources in Jinjiang and other areas to divert water for irrigation, and make overall arrangements to connect the water conservancy projects in the irrigation area into an irrigation network. The specific arrangement of the project is as follows: the tail water of Shanmei Reservoir will be diverted from Dongxi to Jinjizha, and the Jinjibei Canal will be expanded, and the main canal of Huidong South will be connected through Luoyang Bridge Gate to irrigate Huian farmland. While using the original Jinji South Canal, a new high canal was opened to deliver water to Jinjiang Irrigation District. Draw water from the upstream of Jinjizha Gate, supplement the Jinjiang Irrigation District of Shibi Reservoir by pumping water from Shitou Electric Irrigation Station, and transfer its water to the coast of Nan 'an; Quanzhou is directly irrigated by Jinji South and North Canal.

In the irrigation project, the North Main Canal 1975 was completed on March 30; On April 15, the south main canal was opened to water. The whole project was completed in September of 1977, with * *12190,000 cubic meters of earthwork and 2132,000 person-days. After the completion of Huian Houhai, Huidong (including Lunqian, Dongxi and Dongling), Jinjiang Jinnan, Shitou, Xinhua, Hongku, Changfu, Nan 'an and Dongshan, there are a total of electric irrigation stations1/and small stations 165438, with a total installed capacity of 97. Renovation and expansion of 3 hydraulic pumps; Two north-south main canals extend for 43.96 kilometers, nine main canals of electric irrigation stations are 40 kilometers, and 28 main irrigation canals are 2 12.07 kilometers. There are 2 122 new canal buildings, including ring bridge and tunnel, dapingshan tunnel, Luoyang bridge sluice, Lunqian culvert, Xuntou seven-hole sluice, Qujiang aqueduct, Dongxi culvert, Shudou water diversion hub, Shichuanshan culvert, Kunnei tunnel, Chidian tunnel, Dalun aqueduct, Chen Lin aqueduct and Dancuo culvert. The total length of culvert 17 is 3920m, the total length of 25 aqueducts is 6404m, there are 25 highway bridges, 29 sluices, 7 inverted siphons, 7 drainage culverts 1 and other works); The transmission line from Shanmei Reservoir to Quanzhou 1 10KV is 34km long. Quanzhou Houmao 1 10KV step-down station is built, and two 35KV lines and eight 35KV lines are installed, with a total length of1.1. 10KV distribution line is 1 13km, and there are 37 transformers 12050kVA. The investment of Shan Mei Irrigation District Project is 33.855 million yuan, including 25.9638+400,000 yuan from the state.

1973, south canal expansion project started. Yutian sluice was built in Xingma flood control embankment on the south bank of the lower reaches of Jinjiang River by using the original intake sluice. The sluice is 3 meters wide, the water inflow is 8.5 cubic meters per second, and the total water inflow of the canal is expanded to 38.5 cubic meters per second. Yutian diversion canal is 4.78km long and its flow rate is 8.5m3/s, and it joins Laonan Canal at 1+4 17. The channel flow from hub to Shudou diversion hub is expanded from 12m3/s to 38.5m3/s. There are high and low canals behind the diversion hub. The low canal uses the old south canal to keep the flow of 12m3/s unchanged, and a new high canal is opened with the flow of 26.5m3/s ... Quanzhou Shudou to Jinjiang Gaza Bridge, with a total length of11.58km. There are 6 main buildings such as culverts, 8 drainage buildings and 54 traffic bridges. Considering the traffic requirements of ships, the South Canal can go up from Shuanggou Low Canal in Jinjiang, enter the main canal through the lock of Shudou Water Diversion Hub, and then enter the upper reaches of Jinji Gate from Yutian Xinkai Canal through Yutian Gate. On April 1975 and 15, the South Canal was expanded and opened to water. The expansion project of the North Canal started in July, with 1973. The sluice was added with 1 hole, with a clear width of 3.0 meters, and the elevation of the sluice bottom was reduced from 6.5 meters to 6.0 meters. The designed water inflow is increased from 6 m3/s to 22.5 m3/s, and the channel is increased from the original 1 1.44 km to 24.74km. The designed flow entering the Luoyang Bridge Gate is 16 m3/s, and there are main buildings 3 1 and general buildings/kloc-along the channel. 1April, 977, the expansion of the North Canal was completed. The completion of the North Canal has played an obvious role in increasing agricultural production. In the early days of liberation, the yield per mu of rice in irrigation areas increased from175 to 200 kg, 1970 to 480 kg, and 1979 to 700 kg. The North Canal is also responsible for supplying industrial and residential water in Quanzhou, and reducing the waterlogging disaster along the canal.

Luoyang Bridge Sluice Project Luoyang Bridge Sluice is located 500 meters downstream of Luoyang River, upstream of Luoyang Ancient Bridge, connected to Qiaonan Village in Licheng District in the south and Luoyang Town in Hui 'an County in the north. It is the connecting project of the North Canal in Shan Mei Irrigation District and one of the important bridges of Fuzhou-Xiamen Highway, with comprehensive benefits of irrigation, transportation, moisture prevention and flood discharge. The project started in June 197 1, was completed in July 1974, and the road bridge was officially opened to traffic in June of the same year. After the Shanmei Reservoir Project was put into operation, it received the benefits of irrigation, flood control, power generation and comprehensive management. The original design irrigation water consumption of the project is 650 million cubic meters, and the irrigation area is 6 1.67 million mu. The approved irrigation area is 650,000 mu, including 420,000 mu in Jinjiang County (including present-day shishi city), 0/0.2 million mu in Hui 'an County, 60,000 mu in Licheng District, 50,000 mu in Nan 'an County, and 480,000 mu in supporting irrigation. The irrigation efficiency is remarkable, and the crop yield in the irrigation area is increasing year by year. After the completion of the irrigation area, the average annual output per unit area of crops increased by 144.5 kg, the annual output per mu of water conservancy irrigation efficiency increased by 28.9 kg, and the annual output of the irrigation area increased by 13872 tons.

The water supply flow of the project to Quanzhou is 2.44 cubic meters per second, which is used for industrial production and residents' life, and the annual water consumption is 77 million cubic meters.

The original design flood control benefit of the project is to ensure that 30,000 mu of cultivated land along the South Bank Wharf, Meishan, Honglai, Kangmei and other coastal areas and Honglai Town will not be flooded once every 20 years. The flood dike in the lower reaches of Jinjiang River will reduce the peak flow and stagger the peak operation, so as to reduce the peak pressure and improve the flood control capacity. During the typhoon 1985 on June 4th, the upstream rainfall was 234 mm, the inflow peak flow was 1287 m3/s, the reservoir water level rose from 8 1.25 m to 9 1.22 m, and the flood was stopped1430,000m3 without overflow. 1990 During Typhoon No.9, from July 30th to August 5th, the average rainfall in the reservoir area was 506.9mm, the inflow peak flow was 2380m3/s, and the flood volume reached 337m 3, which happened once in nearly 20 years. The reservoir water level rose from 94. 16m to 96.88m, and the maximum discharge was 1238.

1973 to 1990, the water consumption for reservoir power generation148.8 billion cubic meters, and the flood discharge is about 3.24 billion cubic meters. The fish surface of the reservoir is19620mu, which is stocked every year, and the cumulative catch is175,000 Jin; The mountainous area in the reservoir area is 35 10 mu, all of which are planted with trees such as American pine, litchi, longan, bayberry and other fruit trees 1000 (430 mu), 65 mu of tea trees, and the annual harvest of tea is 3000 kg. Daban Village, Wharf Township, Nan 'an County, is located 50 kilometers northwest of Quanzhou City and in the middle reaches of Dongxia, a tributary of Jinjiang River. The installed capacity of the hydropower station is two 654.38+0.5 million kilowatt hydro-generator sets, and the annual designed power generation is 65.438+0.5 billion kWh. The total storage capacity of Shan Mei Hydropower Station is 650 million cubic meters. The normal high water level storage capacity is 395 million cubic meters, mainly irrigation, combined with power generation. The dam is an earth-rock dam with clay core. The actual dam is 75.2 meters high, 305 meters long at the top, 360 meters wide at the bottom and 8 meters wide at the top. 197 1 year 65438+February, equipment installation started, and HL-2 1 1-LJ25 type 1 .5000 kw hydro-generator set1set manufactured by Tianjin Electric Power Equipment Factory was installed. The trial operation was successful on September 30th of the following year, and it was sent to Houmao Substation 1 10 kV. On September 22nd, 1973, another 1 hydro-generator set of the same type and factory was put into operation, and it was incorporated into Shanquan power grid.

The station was incorporated into Fujian power grid on 1980, and was responsible for peak shaving in Quanzhou area. The original designed annual power generation of the reservoir power station is 65.438+0.05 billion kWh. From June 654.38+0.972 to the end of June 654.38+0.990, the cumulative power generation is 65.438+0.4076 billion kWh, with a total output value of 65.438+0.025452 billion yuan and a profit of 25.63 million yuan.