In the Tang Dynasty, Xianyou people built dams along the Mulan River to irrigate farmland. The Song Dynasty was the heyday of Xianyou water diversion project, and 627 ponds were built in the county, with an irrigation area of 67,000 mu. From the Ming Dynasty to the Qing Dynasty, new ponds were built 102, and the accumulated irrigation area was 100500 mu. According to the Ming Dynasty's "Eight Min Tong Zhi", "Some departments are prohibited at an appropriate time: in spring, ponds are built to store water in case of drought; Qiu Cheng opened the door to this ship. " During the Republic of China, it was built on the original basis. After the founding of People's Republic of China (PRC), water conservancy projects were vigorously built. By the end of 1992, there were 467 water diversion projects in the county, with an effective irrigation area of 62,000 mu, including over 10,000 mu 1 project, 38 mu 1000 mu/project and 600-800 mu1project.
The main water diversion projects are Guandupei, Quanshan Canal, Xingshan Canal and Baiyeba.
Guandubai is located on the bank of Xianshui River in Bangtou Town, with an intercepting basin area of 1.80 square kilometers. It was originally divided into two parts: pipe skin and Dolby. Dubi was built in the year of Song San (1 176), and Guanbi was built in the 22nd year of Wanli in the Ming Dynasty (1594). At that time, Zheng Ruixing, the head of the household department, returned to his hometown and presided over the construction of another building in the upper reaches of Watanabe, commonly known as "Guanpi". Later generations called these two vicious circles "the vicious circle of officials and officials". Reconstruction 1978, the original river pebble temporary dam was transformed into a masonry roller dam with a length of 85 meters and a height of 1.2 meters. On the right bank, there are two intake sluices: intake canal, single canal and main canal, with a total length of17km and 35 branch canals passing through Bangtou Town 15 villages. Over the years, the state has invested 500,000 yuan to complete about 200,000 cubic meters of earthwork, and the people have invested 200,000 working days.
Quanshan Canal and Xixi Dam are located on the main stream of Mulan River in Licheng Town, which was completed on 1954. The total length of main canal is 14km, and the length of two branch canals is 6km. The designed irrigation area is 3000mu, and the effective irrigation area is1700mu. Over the years, the state has invested 300,000 yuan to complete earthwork/kloc-0.5 million cubic meters, and the people have invested 200,000 man-days. 1972, the dam was transformed into a masonry dam, with a length of 2 16 m and a height of 1.2 m, with an intercepting basin area of 522 square kilometers and a diversion flow of 0.5 cubic meters per second. Licheng, Chengdong, Bangtou and other three towns and seven villages (streets) benefited. There are four sluice gates 14, aqueducts 1 4, inverted siphon pipes 10, culverts 1 0, two electric irrigation stations, and four installed ones,10/kw. The Quanshan Canal is under the jurisdiction of the County Hydropower Bureau, with good management and remarkable benefits. It not only irrigated farmland in time, but also improved the environmental sanitation in Licheng area. However, since 1980, with the rapid development and prosperity of urban areas and the increase of population, the discharge of "three wastes" in cities and towns has soared, affecting the 3 km main canal of Licheng and dumping garbage and feces. , turned into a sewage ditch, reduced the cross section of water, irrigation area dropped sharply, on the verge of scrapping.
Xingshan Canal, located in Fenyang Village, Daji Town, intercepting Daji River, was built at 1954. This is a temporary dam made of pebbles. 1983, which was destroyed by flood, was converted into a slurry block rock dam. Over the years, the state invested 6.5438+0.5 million yuan, completed 6.5438+0.5 million cubic meters of earth and stone, and the people invested 6.5438+0.5 million man-days. The interception basin covers an area of 87.8 square kilometers. 197 1 Fenyang hydropower station will be built, and a flow dam will be built upstream to draw water out of the basin. In order not to affect the original effective irrigation area, the tail water of power generation is led back to Xingshan Dam. The barrage of Xingshan Canal is 2.8 meters high and 40 meters long, with a design flow of 0.3 cubic meters per second and a main canal length of 10 km. There are two aqueducts on the canal, 1 inverted rainbow pipe, benefiting 3,200 mu of farmland in 9 villages of 2 towns, such as Daji and Chengdong. However, due to serious leakage and collapse along the canal, the irrigation area has been greatly reduced.
Baiyeba, located in Motou Village, Longhua Town, intercepts Longhua Creek. Founded in the Ming Dynasty, it was originally a dry masonry dam, with an upstream control basin area of 70 square kilometers. 1983, after being destroyed by the flood, the dam site moved up and was converted into a semi-automatic flap gate, with a length of 36 meters and a height of 3 meters. When the flood exceeds the design water level, the gate will automatically turn over to discharge the flood. This is a new type of gate pioneered by this county. This can narrow the scope of the flooded area in the upstream, reduce the erosion of the downstream plain and facilitate management. Baiyeba irrigates four villages (Red Star, Lighthouse, Xinfeng and Tuanjie) 1.900 mu of farmland. The total main canal is 2.5km, 4 branch canals are 2.5km, 3 flood gates, culvert 1 seat, electric irrigation station 1 seat, and installed capacity 1 set17kW.
Mulan Monument, in the first year of Song Zhiping (1064), Qian Siniang, a Changle woman, came to Pupu with 100,000 taels of silver, and built a vicious circle in front of the General Rock of Mulan River. Because of the complex basic geology, the water potential is steep to the right and slow to the left, which can't resist the impact of mountain torrents. The vicious circle was washed away by the flood just after it was built, and Qian Siniang patrolled in the vicious circle and fell into the water and died. Later, Changle Jinshilin took 1 00000 yuan from the world, and built a pond at the hot spring mouth near the north downstream of Mulan1km. Because the bend in the harbor was narrow, it was washed away by the tide. In the eighth year of Song Xining (1075), Hou Guan Li Hong was asked to establish a vicious circle for the third time. With the help of monk Feng Zhiri, he learned the lesson that money and forest failed to build a vicious circle twice. After careful investigation, he chose the foot of Mulan Mountain, where the river between Qian and Lin is wide and the water flow is slow, as the location of vicious circle, which lasted for eight years and Yuanfeng for six years (65438). This is the largest ancient water diversion project in Fujian Province and one of the most intact ancient water conservancy projects in China. The barrage of the hub project is the main project of Mulan North. The dam is 2 19 meters long and consists of overflow weir and gravity dam. The overall design of Mulan back is reasonable, and it has comprehensive functions such as flood discharge, tide blocking and irrigation. Supporting projects include Zhengban (Houliao) Steep Gate, Yangcheng Steep Gate, Linton Steep Gate, Dongshan Steep Gate, Ligang Shatian Steep Gate, Octopus Harbor Steep Gate, Hebo Saishiyan Gate and Shui Ze Gate.
Nanyang Canal System, a supporting project of Mulan North Canal System, is built at the southern end of the dam (also known as Huinan Bridge), with a height of 3m, two holes, a left width of 2.85m and a right width of 3.25m, normal water diversion 1 1 m3/s, and a total channel length of173km. Seventy-seven villages in four towns of Quqiao, Huangshi, Hushi and Gaobei in Nanyang Plain benefited, with an irrigation area of 73,000 mu.
Beiyang Canal System and Mulan North Canal System are supporting projects. In the second year of Yuanyou (13 15), the "Wanjin Steep Gate" was established, that is, it entered the sluice. The normal inflow is 5.5 cubic meters per second, the total length of the channel is 185.5 kilometers, and the storage capacity is140,000 cubic meters. 92 villages in Xitianwei, Wutang Town, Chengxiang District and Hanjiang District benefited, with an irrigation area of 64,000 mu.
From 1949 to 1990, a total of 2.09 million man-days and an investment of 9.85 million yuan were invested, and 42 holes of 9 culvert gates were built successively, including: culvert dam 15 hole, Dongshan 2 hole, Guangkou 2 hole, Li Gang 6 hole, bridge pocket 3 hole, wave prevention 3 hole and sky width. Add 55 drainage culverts, 4 interval drainage gates, 7 diversion gates, 55 control gates and 50 intake culverts 150 to control water level and increase flood discharge, thus forming a systematic storage, guidance, drainage and irrigation. Its main flood discharge facilities are: Chen Qiao Dam, Dongshan Sluice, Tiancuo Sluice, Ninghai Sluice, Ligang Sluice, Jiangdong Sluice, Shi Lang Sluice, Hongqi Sluice, Kuankou Sluice and Xinxi Overflow Weir.
Sihuapi, also known as Zhihua North, is located in the lower reaches of Yanshou River, 4 kilometers away from the urban area. It is connected to Longqiao Village in the south and Xia Zheng Village in the north, with a length of 253. 12 m, a height of 5 m, a top width of 1.20 m, and an overflow weir with a width of 42 m and a depth of 0.65 m in the center to facilitate flood discharge. The South Canal flows from Wugong and enters Yanshou via Longqiao and Sibuling, with an irrigation area of 65,438+000 mu. The North Canal flows through Xia Zheng, Yangxi, Liu Xia, Baidu and Xia Wei (Inner Lake), with an irrigation area of more than 3,000 mu. No research on the age of sihuapi building. Xinghua Fuzhi has a history of 53 years: "In the Tang and Wu Dynasties, longevity skins were built to irrigate Pingyang and respect Li Xian, but the land was high but not beneficial. When the four skins are built, water will be transferred to the north. " Tomorrow, in the second year (1458), Fang Kui, who participated in politics, will be rebuilt. After the founding of People's Republic of China (PRC), the Management Committee of Four Kinds of Skin was established. 1953+00 In June, a 63m-long inverted siphon across Yanshou River was built in Dianzaitou, Baixicun. Excavate 2.75km of channels, build 3 intake gates, drainage gates and road culverts, and irrigate Changlin and Peking University farmland1074mu. At the beginning of 1956, sihuapi was merged into Mulan north irrigation area. 1958 sihuapi expansion, and the intake culvert of the north canal was changed into a gate. 4.67 kilometers of canals were built, and 6 wooden aqueducts were built, which irrigated 8,000 mu of farmland in Dai Li, Anren and Wujiang. The dam head is raised by 0.5 meters, and the dam top is completely flat, leaving no gap. The benefit area increased from 0.3 million mu to 6.5438+0.2 million mu, basically. 1960, Dongzhen Reservoir was completed, and Sihuapi Zuoqu was placed under the management of Dongzhen Irrigation District.
Iwate skin, located at the southeast 1 km downstream of Sihuapi, is named Dutang. Yanshou Creek is surrounded by mountains to the west and the sea to the east. The river flows out of Dutang from north to south and into the sea, which is under-irrigated. In the middle of the Tang Dynasty (780 ~ 783), Xing Wu, a Yi people, took the sea as a field, built dikes in Dutang to keep out the tide, and piled stones into a vicious circle, preventing streams from flowing into Shatangban and irrigating Beiyang Plain, which was named Yanshoupi. Today, there are no engineering relics. Guyang Reservoir, located in the middle reaches of Xianyou Kuxi, a tributary of Mulan River, is located in Laidian Town, Guyang County, Wu Dun. The rainwater harvesting area in the reservoir area is 26.8 1 km2, with an average inflow of 27 million cubic meters for many years, a total storage capacity of 24 million cubic meters and an effective storage capacity of 1.82 1.000 cubic meters. It is a medium-sized reservoir. The project started in June, 1959, 10, and the dam was completed in only two months, 1. The reservoir dam is an earth-rock dam with clay core wall, with a height of 37m, a crest length of 240m and a crest width of 6m. The clear width of the spillway is19.5m, and there are 4 imported reinforced concrete roller plane gates, with the maximum flood discharge of 43 1m3/s. The water conveyance culvert is a masonry arch culvert, which was later changed into a steel plate sleeve with a diameter of1m, with the maximum water conveyance of 5m3/s. The total length of the canal is 35.5km.. Existing irrigation area 1.83 million mu. After the dam, four power stations were installed, with a total of 655 kilowatts. From 65438 to 0984, it has been used for domestic and industrial water supply in Licheng area.
Dongxi Reservoir is located in Xipu Village, Laidian Town. The area of rainwater collection in the reservoir area is 35.5 square kilometers, the average inflow for many years is 35 million cubic meters, the total storage capacity is 22.82 million cubic meters, and the effective storage capacity is19.57 million cubic meters. It is a medium-sized reservoir. 197 1 Construction started in March. The dam is a fine stone concrete mortar masonry hyperbolic arch dam, with a maximum dam height of 57m, a dam crest width of 3m, and a crest arc length of158.8m. Dongxi Reservoir Dam is the first masonry arch dam in our province without protective impervious panels (walls). After years of operation and many tests of the highest water level, the dam has been dry and bright, without any wet white secretions. The total length of the main canal is 27.37 kilometers, including 6.8 kilometers. Irrigated 20,400 mu of cultivated land in Laidian, Suburb and Gaiwei Town. There are four inverted siphon pipes, eight aqueducts, one tunnel 10 and one power station 1 seat behind the dam, with an installed capacity of 800 kilowatts.
Jiangge Reservoir is located in houpu village, Dewey Town. The rainwater harvesting area in the reservoir area is 50 15 square kilometers, the average inflow for many years is 60 million cubic meters, the total storage capacity is14.64 million cubic meters, and the flood control storage capacity is 2.28 million cubic meters. It is a medium-sized reservoir. From mid-September of 1980 to mid-October of 198 1, the main body was completed. The dam is 43.6m high, with a crest length of160m, a crest width of 6m and a breakwater height of 0.8m. The total length of the main canal is 4.64km, and there are seven aqueducts in the canal system, of which Houpu aqueduct has the largest span of 60m, with a total length of139m and the highest point of14. The installed capacity of two power stations behind the dam is 640kW, the installed capacity of two secondary power stations on the waterway is 375kW, the installed capacity of two lower secondary power stations is 650kW, and the installed capacity of three power stations is1665kW, with an annual power generation of 4-5 million kWh, which can meet the existing power demand of Dewey Town.
Dongzhen Reservoir is located in the middle reaches of Yanshou River, 8 kilometers northwest of Putian City, Fujian Province. Commencement in June 1958, completion in April 1960. The drainage area of Tongshui Reservoir is 32 1 km2, the river course is 40.5 km long, the total storage capacity is 435 million cubic meters, the normal storage level is 80.5 millo zero elevation (the same below), the corresponding storage capacity is 282.7 million cubic meters, the dead water level elevation is 50 meters, and the dead storage capacity is 4 million. The project consists of three buildings: dam, water culvert and spillway. The dam has a height of 58.6m, a crest width of 8m, a breakwater 1, a dam height 1 m and a dam length of 367m. It is a mixed dam with clay core wall. The main canal of Dongzhen starts from the outlet of the water conveyance culvert at an altitude of 38.033 meters, winds southward through tianmashan on the right side of the dam, bypasses Guanghua Temple in Nanshan, crosses Mulan River, crosses the foot of Hushan Mountain and reaches the coast. Dongzhen canal system project has main canal 1, with a total length of 89 kilometers, and branch canal 1 1, with a total length of 87 kilometers. There are 325 buildings in 24 categories along the canal system, including 20 Lin Xia, Shanpai Aqueduct, Mulan Inverted Siphon, Hongshan Reservoir, Donghu Lake and Shangyingbian Inverted Siphon. /kloc-There are 225 administrative villages in 0/0 township, such as suburb, Quqiao, Huangshi, Hushi, Gaobei, Dongqiao, Daitou, Pinghai, Zhongmen and Dongzhuang. 1962 The irrigation area is 300,000 mu, of which 225,000 mu is irrigated by gravity. 1963 winter solstice 1964 spring 1960 may 1978 198 1 year-1984. Mulanxi flood dike project is mainly used to prevent erosion and collapse. Before the founding of People's Republic of China (PRC), cobblestones were used to build 2-meter-high dams in some areas, but they were often washed away by floods and flooded farmland. After the establishment of People's Republic of China (PRC), the county people's government organized the masses to build dikes on both sides of Mulan River in a planned way. 1966, the headquarters of Mulan River Regulation Project was established, with the financial allocation of 1 10,000 yuan from Jinjiang district and county, and millions of yuan from the local team. On both sides of Mulan River, within a range of more than 50 kilometers from Dewey Houpu to Gaiwei Xiantan, a nationwide dike building activity was carried out. There are 48 brigades (streets) in 7 social towns such as Dewey, Daji, Longhua, Chengguan, Laidian, Bangtou and Gaiwei, which play the role of more than 654.38+00000 migrant workers every day. After more than a year of hard work, 654.38+07000000 man-days have been invested, 2.5 million cubic meters of earth and stone have been completed, and 60-70% of the banks of Mulan River have been built. Since then, some funds have been allocated from the agricultural water conservancy fund and the flood control insurance fund every year for the maintenance and repair of water dikes and the construction of a small number of dikes.
The South-North Ocean seawall recorded in the Annals of Xinghua in Hongzhi, Ming Dynasty was built in the middle of Tang Dynasty (780 ~ 783). In order to develop Beiyang, Xing Wu blocked the seawall and built an extended life pond to irrigate 400 hectares. Tang Yuanhe Jian (806 ~ 820) and Pei Ziyuan built Zhenhai stone dike to develop Nanyang. Mulanbei was built in Song Lihong, and there are 50-mile seawalls on both sides from Beitou to Sanjiangkou, which have been continuously expanded and improved throughout the ages.
The north-south seawall is an important barrier of Mulan North Irrigation District. The seawall starts from Longtoushu in Dongshan Village of Huangshi in the south and ends in Aoshan Village of Hanjiang River in the north. The inner harbor seawall is 87.48 kilometers long from Mulan Head to Sanjiangkou, which protects the lives and property of 204,300 mu of farmland and 448,700 people in 69 villages in 4 towns in the northern and southern oceans. The main buildings in the seawall are culverts 10 1 holes 143. There are 47 holes in spillway gate 16; There are 85 drainage culverts and 96 holes.
In the open sea, there is Zhenhai Dam, also called Dongjia seawall, which runs from Dongjia to shelter the waves. The top elevation of the seawall is 8m, and the seawall is 3.4km long. Built in the Tang and Yuan Dynasties (806 ~ 820), in the 20th year of Hongwu in Ming Dynasty (1387), stone dikes were demolished in Zhoudexing, Xiahou, Jiangxi Province, and only 1 earth dikes were left in Haiping Haiwei City and Puxisuo City. In the thirty years of Hongwu in Ming Dynasty (1397), the earth embankment burst and the sea water rushed to the foot of Hushan. In the 13th year of Jiajing in Ming Dynasty (1534) and 137, it was repaired and damaged many times, and the farmland was swallowed up by the tide eight times. Huang Yi, the magistrate of Xinghua Prefecture, rebuilt the stone dike, which was released by Xie Guan when it was completed, and it was the same as Tongzhitan Armor. The autumn of the fifty-ninth year of Qing Qianlong (1794). The sea overflowed and the riverbank was polluted. In the sixth to seventh year of Daoguang (1826 ~ 1827), Chen Chiyang, a Yi people, rebuilt the Dongjia Stone Dike by relying on the people, and the project was stronger than before. In the 35th year of the Republic of China (1946) and September of 1, the typhoon increased the tide, washed away the Dongjia seawall, and the seawater flooded into Huangshi, Quqiao and other towns, and the farmland was flooded by more than 90,000 mu. After three years of cultivation, crops are still scarce.
After the founding of the People's Republic of China, before the flood season every year, the county people's government mobilized the masses and invested a lot of labor to heighten and thicken the seawall, constantly improving the quality of the seawall. By September of 196 1 year, it had withstood many wave attacks and passed the flood season safely. No.22 strong typhoon struck in September, 196 1. The wind force 1 1 or above, and the tidal level of Sanjiangkou is 7.42 meters, which is 7.39 meters higher than the historical highest tidal level. Under the attack of typhoon, spring tide and flood, Dongshan seawall burst except 270 meters, and the loss was extremely serious. The Putian Municipal Committee of the Communist Party of China and the Putian Municipal People's Committee have listed the reconstruction of Dongjia seawall as a key infrastructure project. Ye Fei, secretary of Fujian Provincial Committee of the Communist Party of China, visited the site and instructed Jinjiang Hydropower Engineering Bureau to be responsible for the survey and design. 1962, Putian Nanbeiyang seawall engineering headquarters was established, under the command of Yuan Lushan, the county magistrate. There are two seawall engineering headquarters, Beiyang and Nanyang, with a daily labor force of more than 10000, and the construction is carried out in sections with good quality and quantity. The project is divided into two phases: the first phase, from 1962 1 to12, completed 6.27km of stone embankment, and invested 83 1800 man-days and1/kloc-. In the second stage, from 1964 65438+ 10 to196565438+February, the section from Dongshan to Jiangdong levee was expanded by 8.736 kilometers, and 9 culverts were built, with an investment of108/kloc-
The seawalls on both sides of the inner harbor (from Mulan Beitou to Sanjiangkou) are 87.48 kilometers long and 7.3 ~ 8.2 meters high, which are both flood-proof and moisture-proof. But because it is an earth embankment, it is not high enough and often breaks. After the establishment of People's Republic of China (PRC), it has been continuously strengthened. 1970 reinforce the seawall with a total length of 15.37 km from Nanji (subordinate to Jang Jin Village) of the upstream suburban commune to Sanjiangkou and Qingjiang Village of Huangshi commune in Nanyang on the other side. Stone height of outer slope 1 m, new expansion of spur dike 1 16. Among them, there are 55 in Nanyang and 6 1 in Beiyang, which are for flood control dykes. Brewmaster Creek Cascade Power Station, located in the northwest suburb of Xianyou County, draws water from Brewmaster Creek, a tributary of Dazhangxi, and carries out cascade power generation across the basin to Xianshuixi, a tributary of Mulan River, providing agricultural irrigation and industrial domestic water; The total investment of the whole project is 435 million yuan, and it is planned to develop in four phases, and seven reservoirs and four power stations will be built, of which seven reservoirs have a total storage capacity of 47.63 million cubic meters, and four power stations have a total installed capacity of 64,000 kilowatts, with an average annual power generation of 200 million kWh, which can generate 70 million yuan in revenue and more than 40 million yuan in profit and tax. The first and third power stations were put into operation on August 8, 2002 1998 and July 1 respectively. The second and fourth power stations started construction at the same time in May 2003. Brewmaster Creek Cascade Hydropower Station dammed and stored water in Brewmaster Creek, a tributary of Dazhangxi in Xianyou County. Taking Xiwei Reservoir as the center, four reservoirs are connected together through a diversion tunnel to form a leading reservoir project, and then the water source is introduced into a fresh water stream, a tributary of Mulan River, a low river, to generate electricity by stages. The whole project has 7 reservoirs and 4 stations (4 steps). The development of the project focuses on power generation, which has the comprehensive development and utilization functions of irrigation, water supply and pollution improvement of Mulan River.
Nanshan Power Station is located in Nanshan Natural Village, Fenyang Village, Daji Town. Covering an area of 20 mu, the rainwater collection area is 57.84 square kilometers, the design head is 2 17 meters, and the water diversion flow is 1.54 cubic meters per second. The project started in June 1978, and was completed and put into production in August 1 and 1979. Installed capacity 1 set, capacity1250kw; 1980 newly-increased capacity of the power station 1 set, with a capacity of 1250 kW. The whole project includes 1 single arch dam, with a dam height of10m, a dam top width of 4m, a dam bottom width of16m, a diversion channel length of 5.7km, and a building area of 621.6m2 for workshops and dormitories. Two generator sets in the power station are connected in parallel on the 6.3 kV bus, and the connection mode is single bus, which is not segmented. They pass through the outdoor booster station and have 1 main transformer with a capacity of 4000 KVA and a voltage of 35 KV /6.3 KV. The 35 KV bypass line 16 km will be sent to Chengguan 35 KV substation, and the 6.3 KV will be sent to Xiyuan, Fengshan and Sheshe. 1in June, 1984, the main transformer 1 1 set was replaced, with a capacity of 4000 KVA and a voltage of 35/ 10.5/6.3 KV, which was increased by 10 KV, and was sent to Dewey Town for power supply via line 7 km. The total investment of the project is 2.37 million yuan.
Fenyang Power Station, formerly known as Daji Power Station and Chaoyang Power Station. Located in Fenyang Village, Daji Town. The rainwater collection area is 65.4 square kilometers, covering an area of 37.77 mu, with a total investment of 1.23 1.80 million yuan. The first-class power station 1970 was started, and 1973 was put into operation in June. Diversion flow 1.32 m3/s, open channel 5,200m, pressure pool length 15m, width 15m, water head 107m, pressure cast iron water pipe 385m, internal diameter 0.7m and installed capacity 960kW. The secondary power station was started on 1972 and put into operation on 1974. The power station uses the tailrace of the first-class power station to divert water to generate electricity. Tailrace channel 1.220m, water head 1.7m, pressure cast iron water pipe 25m, pipe inner diameter 0.75m, water diversion flow 1.38 m3/s, two sets installed, with a total capacity of 200kW. The renovation project started in June 1990 and was put into production in May. The original primary and secondary power stations were merged into the primary power station, with a design head 106.5m, a total shunt flow of 2.4m3/s, a total installed capacity of 2,000kW and a total investment of 3,087,900 yuan. The renovation project is one of the 15 construction management contracts signed by Xianyou electric power company and the county people's government.
Bangtou Jiulihu Power Station, located in Houbao Village, Bangtou Town, is a comprehensive utilization project of inter-basin water diversion cascade power generation. The whole project is equipped with three-stage hydropower stations for power generation, with a total installed capacity of 4 100 kw and an average annual water diversion of 20 million cubic meters. The rainwater collection area is 60 square kilometers with a total head of 475 meters. It also provides water for agriculture, life and industry to six villages including Houbao, Xinzheng, Xiangyang and Xiangshan. The diversion tunnel of the first-class power station is 850m long, with a design head of 2 17.5m and a diversion flow of 1.32 m3/s, with 4 installed units and a capacity of 1.900 kw (the power station was upgraded in September 1.986, and the original three 400kW generators were replaced by three. The project started on June 1978 and put into production on July 20th 1980. The secondary station uses the tail water of the primary station to generate electricity. After passing through the 850m diversion canal, the concentrated drop is 202m, the design flow is 0.97m3/s, and 4 sets are installed. Capacity 1600 kW (original capacity is 3×400 kW, 1 set added in September, 1986, capacity is 400 kW), and annual power generation is 628.110,000kwh. The power station started construction in February 1982, and was completed and put into operation in October 1983/kloc-0. The third-stage station uses the tail water of the second-stage station to generate electricity, and crosses the mountain road of 150m, with a design head of 67m and a design flow of 1.29m3/s, with two installed machines and a total capacity of 600kW.
Shi Ding Hydropower Station started construction in March 1960, and completed power generation in July 196 1. The power station is located at 5.3km of Dongzhen main canal, with 2 holes 1 control sluice, and there are 1 intake sluice and drainage sluice near the upstream, with an installed capacity of 255kW (main engine 180 kw and standby machine 75kW). The pipe is made of wood pipe (later reinforced concrete pipe), flat house workshop, and the tail water flows into snake skin. Install the 1 Francis turbine produced by Putian General Machinery Factory as the power to drive the generator set. Erect two lines, 1 connected to Putian Power Plant for power supply, 1 for the construction of power supply lines for Dongzhen Hydropower Station. In that year, the power supply was 56 1.40 million kwh, and 1.962 reached 824,800 kwh. 1963165438+1October, after the completion of Dongzhen Hydropower Station, it was changed into a standby power plant. At the beginning of 1979, the 1 400 kW hydro-generator set was modified, and the diversion flow was expanded to 2m3/s. By the end of 1990, the total power generation was 8,665,500 kWh.
Dongzhen Hydropower Station is a back dam hydropower station, which started in March 1960 and was completed in October 1963 10. The project is designed by the Design Institute of the Provincial Hydropower Department, and has 1 and two generator sets, with an installed capacity of 3 120 kW, and the annual special water consumption for power generation is 68.7 million cubic meters. The bottom floor of the workshop is the turbine room, the middle floor is the generator set and other equipment, and the upper floor is the central control room. 1 The needle valve lock cavity is built on the left side. The needle valve gate has two holes, which are specially used for irrigation. 300 meters away from the head of the canal, a control gate was set up. There is a 1 booster station in front of the power station to send electricity to Han Cheng Power Supply Station. In April, 1980, Dongzhen Hydropower Station was expanded, and 1 generator set (Unit 3) was installed, with an installed capacity of 3200 kW. At the same time, the booster station was expanded, and two 4200 kV main transformers were merged into the 35 kV line of the provincial power grid through Xiaotang substation.