Yudai River flood control project. Most of the banks of Yudai River from Nianpanshi to Liujiaba are paddy fields, which are the most concentrated areas in this county. From the winter of 1953 to the spring of 1954, two sections of masonry dikes were built in Shangguan Street and the new urban area of Chengguan Town ***758.8 meters. In 1964, 7 meters of masonry dikes were built in the section from Ximen to Hehe Street. From 1984 to 1988, the Urban Construction Bureau built and rebuilt 1,623 meters of urban defense dikes, and the Water and Power Bureau built 9 meters of agricultural defense dikes, which ensured the residents and farmland in the county town and Chengguan Town. From the 195s to 1989, more than 14,5 meters of flood control embankments were built on the Yudai River, and illegal structures were demolished to ensure the smooth flow of the Yudai River during the flood season.
flood control project of Daan reach. The Da 'an reach, from the stone bridge in Liejinba to Weijiaba in Sangshuwan, is 11.5 kilometers long. The overall planning began in the autumn of 1963. From October 1965 to January 1966, 1,45 people were employed in Liejinba, Da 'an Town and Sangshuwan, and they were fully constructed in 23 places in 1 sections. * * * planned to repair 1,3 meters of sand and gravel agricultural protection dikes and planted 2 bamao. In September, 1972, the flood washed away the riverbank by 25 meters. In 1973, the county hydraulic team surveyed and designed the Da 'an reach, which was to restore the destroyed riverbank and strengthen the original riverbank from winter to 1975. From the flood in 1981 to 1986, 4,57 meters of riverbanks were built in Da 'an Town and Sangshuwan, 8,64 meters of dikes were reinforced, 12 groins were built and 8 disc dams were built. 1, cubic meters of mortar masonry, 46, cubic meters of dry masonry, 439, man-days of labor, and * * * cost 137,3 yuan, which basically ensured the safety of residents and farmland in the three towns. Guanyan, built in 1944 with local people's funds, is located in Zhangjiaping Village, now Luocunba Township. The canal is 1 km long, and the irrigation area is less than 1 mu. After the founding of the People's Republic of China, the people's government allocated special funds for renovation and expansion several times. In 1986, a permanent dam head project was built, with an effective irrigation area of 3 mu.
the tube car canal, located on the tube car river, a tributary of the south bank of Yudai River, belongs to Luocunba Township. The canal is 2 kilometers long, with a diversion flow of .8 second cubic meter. There is a barrage at the head of the canal, which is 3 meters high and 15 meters long, and the irrigation area of facilities is 3 mu. This canal is the first canal weir project that was built under the guidance of Ningqiang Working Group of Hanzhong Water Conservancy Working Group in the spring of 1954.
Happiness Canal, the first canal is located in Caojiagou, Luocunba. A masonry dam with a length of 1m, a height of 2.5m and a length of 6km is built, which will divert water to Xiaojiaba, expand irrigation by 2 mu and ensure irrigation by 4 mu. The project started in the winter of 1955 and was completed the following spring. In 1963, a 11-meter-long tunnel was dug in Wulangbaya, which made the water use in the irrigation area more secure. Jiefang Canal, located in Wangjiaba Village, Hujiaba Township, is 3 kilometers long. It was completed in the spring of 1956 and irrigated more than 3 mu of farmland in Wangjiaba and Chenjiaba.
erdaohe dam project, which is the earliest modern diversion canal head project built in this county. The dam site is located at the intersection of Yudai River and dry ditch in Jinjiaping Township, southwest of the county seat. The project started in the winter of 1963 and was completed in the spring of 1964. A rolling dam with a length of 44 meters and a height of 3.5 meters was built, with a water intake gate and a sand flushing gate in the north and south respectively. The south main canal is 6 kilometers and the north main canal is 3 kilometers, with a facility area of 2,59 mu and a guaranteed irrigation of 964 mu. The project * * * invested 16, yuan, invested 45, man-days, and * * * completed 64.96 million cubic meters of earthwork.
Dalinyan, Dalinyan is the largest diversion irrigation project built in this county. The canal is located at the mouth of the main ditch of Daolinggou, guiding the water in Linggou to open the canal along the east bank of the ditch and passing through the three towns of Baiyanglin, Daan and Sangshuwan, with a total length of 18 kilometers, a facility area of 2,357 mu and guaranteed irrigation of 1,2 mu. This project started construction in the winter of 197, and was completed in 1975. A masonry rolling dam with a length of 26 meters and a height of 3.5 meters was built. One intake sluice and one sand sluice respectively. There are 7 sluice gates, 5 aqueducts, 4 tunnels with a total length of 396 meters, 62 flood discharge bridges and 17 Doumen along the canal. The concrete slab protects the channel by 1562 meters. The design flow is 1.5 second cubic meters. The total investment of the project is 68, yuan, including 54, yuan invested by the state and 14, yuan raised by the masses. * * * 229, cubic meters of earth and stone were excavated and 233,1 man-days were spent.
Yuejin Weir, which was built by ningqiang county Chengguan People's Commune in the spring of 1958, draws water from Jade Beach in the east of the city, goes down the left bank of Yudai River, passes through Hewan, Luocun Dam, Xiaojiaba and Caojiagou, and finally reaches Wangjiaba in Gaozhaizi. The canal line is 2 kilometers long, of which the stone canal accounts for about one third. This weir was built during the Great Leap Forward. Due to the political environment at that time, mistakes in decision-making, hasty start-up, and rushing for success, it violated the laws and procedures of water conservancy construction, resulting in a waste of people and money and a profound lesson. The original plan is to irrigate more than 1, mu, but the actual measurement statistics are only more than 5,5 mu, and most of them are old fields. The empty flow section of the upper section of the canal is too long, and the project is arduous, and the maintenance is not easy. In addition, in the middle of the construction, some leaders think that the canal line is too short, forcing the slope of the bottom of the canal to be changed from 1/1 to 1/15, so that the dug channel in the lower section will be abandoned due to rerouting. Due to various reasons, the project stopped working after half a year, and the channel was initially formed without water supply, which wasted 1 thousand man-days and cost 25 thousand yuan.
Erlangba Diversion Project from Jia to Han. This project is the first stage of cascade development of Tianshengqiao storage and power generation project, which is a cross-basin water diversion project, that is, the water from Xiliu River in Jialing River Basin is introduced into Yudai River in Hanjiang River Basin through channels, tunnels and other engineering facilities for power generation and irrigation. Xiliu River originates from Liping District of Nanzheng County, flows from southeast to northwest, turns to southwest at Erlangba of this county, flows through Maoba River Township and enters Sichuan, and then joins Donghe River in the suburbs of wangcang county and enters Jialing River. Xiliu River passes through the bottom of a mountain in Shuitianping Township of this county, forming an underground river with a length of 27 meters, a width of 3 meters and a height of 25 meters, which looks like a bridge crossing the Xiliu River, hence the name Tiansheng Bridge. According to the survey and design of the Third Engineering Bureau of the Ministry of Water and Electricity and the Provincial Hydropower Design Institute, the basin above Tianshengqiao covers an area of 41 square kilometers, with an average annual flow of 9.1 seconds cubic meters and an average runoff of 287 million cubic meters. Above Tianshengqiao is a deep mountain area with dense forests and good natural coverage. According to the survey and design, if the Tianshengqiao underground river is blocked, a reservoir with a storage capacity of 7 million cubic meters can be formed, and then a power station with an installed capacity of 1, kilowatts will be built behind the dam. The tail water will retreat into the Xiliu River, build a canal along the river, and go down the river to Leijiawan, with a water intake of 6 meters. Another power station with an installed capacity of 6 kilowatts will be built, and the tail water will fall into the head of Leijiawan canal, and then the canal will be built through the tunnel and padded. The above three power stations have an installed capacity of 4, kilowatts, with a total investment of 12 million yuan. The tail water of the power station is injected into Yudai River, which not only increases the power generation capacity of Guan Xia Power Station, but also increases the water source of the downstream Hanhui Canal and enlarges its irrigation area.
Lijiagou Reservoir is located in Wangjiaba Village, Gaozhaizi. The control basin area above the dam site is .6 square kilometers, the dam height is 23 meters, the dam crest is 76 meters long, and the spillway is 1.4 meters wide and 1.7 meters deep. Construction started in the winter of 1968, and the water storage was completed in the spring of the following year. * * * 53,4 cubic meters of earth and stone were completed, and 22,4 man-days were invested, with an investment of 17, yuan. Later, because the horizontal pipe culvert leaked water, it could not be repaired. In 1984, a 9-meter-long drainage tunnel was dug on the left side of the dam. The total storage capacity of this project is 257, cubic meters, and the area of engineering facilities is 6 mu. More than 4 acres of dry farmland in Wangjiaba area have all benefited.
Gao Jiagou Reservoir is located in Wangjiaba Village, Gaozhaizi Township, with a drainage area of .7 square kilometers. The hub project includes dam, spillway and drainage culvert. The dam is a homogeneous earth dam with a height of 16.5 meters and a crest length of 65 meters. Construction started in December 1969, and was completed in 1971, with 45, cubic meters of earth and stone and an area of 2 mu of engineering facilities. After completion, another tunnel was opened from the right abutment to irrigate the field because the culvert leaked and could not be repaired.
Shiguanmen Reservoir, located in Huangjiagou, Qijiaya Village, Gaozhaizi Township, has a drainage area of 2.3 square kilometers, an effective storage capacity of 163, cubic meters, a homogeneous earth dam with a height of 15 meters and a length of 62 meters, a reservoir main canal with a length of 4 kilometers and an engineering facility area of 8 mu. This project started in August 197 and was completed in December 1971, with 45, earthwork completed. After the completion, all the dry slopes in Qijiaya-Yaozui area have been built to protect the crops from drought and flood, with remarkable benefits.
Dagou Reservoir is located in Dagou, Gaozhaizi Township, with a drainage area of .9 square kilometers, an effective storage capacity of 154, cubic meters, a dam height of 19 meters and a length of 89 meters. The project facilities cover an area of 55 mu and the effective area is 35 mu. Construction started in the winter of 1969 and was completed in the spring of the following year. * * * completed 42,2 cubic meters of earthwork, invested 54, man-days and invested 25, yuan. After the completion of the project, all the dry fields in Dujiacaozi area of Gaochao Village will benefit. In addition to irrigation, it also raises fish. It has put in more than 15, fry and harvested more than 5, kilograms of adult fish.
liujiagou reservoir, located in Gucheng village, luocunba township, covers an area of 1.33 square kilometers and has a total storage capacity of 181, cubic meters. The dam is 11 meters high and 61 meters long, and the drainage channel is 2 kilometers long, with an area of 5 mu of engineering facilities. Construction started in the winter of 1969 and water storage was completed in the spring of 197. The project * * * invested 32,8 man-days and invested 15,2 yuan. Over the past few years, 8, fry have been put into the reservoir and more than 6, kilograms of adult fish have been harvested. Dongfanghong Hydropower Station, located in Fujiawan, Gaozhaizi Township, 15 kilometers east of Ningqiang County, is a diversion high-water power station. Mid-levels south of Fujiawan, there are two adjacent limestone springs, Longdonggou and Jiudong Mogou, running down and flowing into Yudai River. Dongfanghong Power Station Project involves damming Longdonggou, digging an open channel of 52 meters and a tunnel of 45 meters to make the two springs converge, repairing a main channel of 2,36 meters, installing a penstock with a diameter of .63 meters and a length of 665 meters in front of ant Bao Liang, building a power plant of 316 square meters in nine grinding ditches, and discharging the tail water into Yudai River. The design flow of the power station is .56 second cubic meter, the water head is 183 meters, there are 3 installed units, the capacity is 72 kilowatts, and there are 2 transformers, 88 KVA. The guaranteed output is 61 kW, and the designed annual power generation is 2.4 million kWh. The power station goes all the way out to Ningqiang County at a voltage of 1 kV and is merged into the State Grid. The power station was reported to the Provincial Water Resources Department in February 1966, approved in September of the same year, and started construction in December. Migrant workers from Jinjiaping, Wangjiaping, Chengguan Town, Luocunba and Gaozhaizi in Chengguan District participated in the construction, and the power generation was completed in October 197. The total investment of the project is 1.1 million yuan, and the total labor is 17.818 man-days, including 99,592 man-days for migrant workers and 8,226 man-days for technicians. After the power station is completed and put into operation, the annual power generation will be 1.5 to 2 million kWh. In 1985, the channel and tunnel of Erlangba diversion project were completed, and part of the water from Xiliu River, a tributary of Jialing River, passed through the tunnel and flowed into the channel of Dongfanghong Power Station, which increased the annual power generation of the power station to 4,595,9 kWh in 1989, accounting for 18% of the designed annual power generation.
Guan Xia Hydropower Station, located in Guan Xia, 27km east of Ningqiang County, was surveyed and designed by the county hydraulic team, and a dam was built on the Yudai River in Xiakou, with a canal opening of 1.6km and a drop of 18m to generate electricity. The design flow is 4.6 seconds cubic meters, and the installed capacity is 235 kilowatts. In August, 197, Tiesuoguan District organized the construction of migrant workers in Tiesuoguan and Pingxihe townships, with intermediate repairs stopped, and power generation was completed in February, 1977. The station is equipped with one 16 kW motor and one 75 kW motor respectively. After power generation, a 1 kV rural power grid in Tiesuoguan area is formed. In 1985, after the water diversion project of Erlangba was put into use, in order to make full use of the increased hydraulic resources of Yudai River, the head of the Guan Xia canal and the diversion channel were reconstructed and expanded, and the number of hydro-generator sets was increased to three sets of 48 kilowatts, with an investment of 75, yuan. After the completion of the power station, the annual power generation is 1.2 million kWh.
Yuanbazi Hydropower Station is located in Majiaba, Yuanbazi Village, Gongjiahe Township, ningqiang county. The dam is built at the lower mouth of Zhangjiaying, with a canal opening of 3,5m, a design flow of 1.2sm3, a design head of 56m and an installed capacity of 32kW. This project is designed by Ankang Hydropower Plant, with the technical guidance of the county hydraulic team and the construction organized by Gongjiahe Township Government. Construction started in May 1985, and power generation was commissioned in February 1988. * * * Install 2 sets of 16 kW hydro-generator sets, and erect 1 kV lines for 17.5 kilometers, which will be used for domestic lighting and township enterprises. The power station was built with an investment of 1.5 million yuan and 133,3 workers, with an annual power generation of 51, kWh. However, the electricity sales are too small, so it is urgent to develop users.
heitanzi hydropower station is located in heitanzi, xiaozhaizi village, Shuanghe township, ningqiang county. The diversion canal is located in the upper Gu Quan of Caojiaba village, with a length of 2,91m, a flow of .4s cubic meter, a pressure pipe of 22m and a head of 93m. The installed capacity is 16 kilowatts. This station was surveyed, designed and guided by the county hydraulic team. Construction started in September 1977 and stopped in 1982 due to lack of capital. During this period, * * * invested 9, yuan to complete the channel platform of 1,87 meters, and with the assistance of Erlangba Water Diversion Project Headquarters, a 28-meter-long tunnel was drilled and a generator was bought back. In August 1985, the county finance allocated 24, yuan to Shuanghe Township poverty alleviation fund to continue the construction of Heitanzi Power Station, which experienced three years of cold and summer. On December 29, 1988, it was commissioned to generate electricity. Although the current power generation capacity is 72, kWh, the electricity sales are still insufficient.
wolongtai power station and Erlangba diversion project from Jia to Han. The project started in December, 1975. After 13 years of cold and heat, it finally completed the whole project from water diversion to power generation at Wolongtai Power Station on the eve of National Day in 1989, and it was officially generated at the end of the year. * * * The canal is 835 meters wide and 2.2 meters high. The whole section is protected by stone, and the culvert arch cover is covered with three cushions, which is 29 meters long. There are 5 tunnels with a length of 4,53 meters. Among them, the longest cross-basin Baijiaya tunnel is 247 meters long. A forebay with a water storage capacity of 5, cubic meters, a factory building with a pressure pipe diameter of 1.2 meters and a length of 641 meters and 567 square meters, 2 sets of 4, kW hydro-generator sets, 25 kilometers of alpine roads, 13 kilometers of 1 kV high-voltage transmission lines and 14.5 kilometers of 35 kV lines. * * * Excavation earthwork is 1,52,3 cubic meters, masonry is 64,8 cubic meters, concrete is 6, cubic meters, and 35 tons of metal structures are installed. * * * put into operation 1.565 million days, with an investment of 18.75 million yuan. The first phase of this project is designed with a reference flow of 4.5 seconds cubic meters, an installed capacity of 8, kilowatts, and an average annual power generation of 5 million kWh. At this point, the county's hydropower installed capacity has reached 11, kilowatts.