He Yao He Yao Water Conservancy Project

Yaohe, also known as Luohe and Xinhe, was called Luojian River in ancient times, which is the passage from Gaotang Lake to Huaihe River. The total length of Heyao River is104km, and the drainage area is1490km2. During the Wanli period of Ming Dynasty (1573 ~ 16 19), a dam was built on the Luo Qing River, a tributary of Heyao River, eight kilometers northeast of Yongkang Town, Dingyuan County. It was rebuilt twice in Qing Dynasty and demolished in 34 years.

From the winter solstice of 1950 to the spring of 195 1, it is surveyed and planned by the water conservancy bureau of the administrative office in northern Anhui. 1In August, 952, a horizontal air roller compacted dam was built in the southwest of Pingwangzhuang, upstream of the old dam site 1 km, with a catchment area of 50 square kilometers. The head of the canal was built into a sluice. The main canal is 7 kilometers long and the south and north branch canals are 5 kilometers long. The low water source comes from Sesame Point Pearl Spring, with a flow of about 0.2 cubic meters per second and an irrigated area of 34,000 mu. 1June, 953, the project was completed. 1972 After the completion of the upstream Sesame Reservoir, Pearl spring water will be stored by the reservoir, and Xiangshuiba irrigation area will be included in the Sesame Reservoir irrigation area.

Long before the Ming Dynasty, Cai was built in today's Changfeng County. It is 1800 feet long from north to south, 500 feet wide from east to west and about 36 miles in circumference. It faces Gaogang in the west and ridges are built on three sides: northeast, south and north. There are thirteen Doumen, which irrigate more than 200 hectares of farmland. In the fourth year of Qingganlong (1739), Shouzhou County ordered Fan Cong to ask for 3620 yuan to repair 1 sluice, 1 sluice, 1 sluice and 3 steep gates, and carry them into Shahe 10. In the thirty-first year of Qianlong (1766), the gate of Shiba Indy in Zhouzhicai Chengtang, Shouzhou was destroyed by water, and the water users and residents around the pond ordered by pro-Tang Yi worked together to rebuild it. In the seventh year of Guangxu (188 1), Ren Lansheng allocated funds to rebuild Feng Ying Road. During the Republic of China, Cai Chengtang was destroyed. By 1949, the outlet was completely washed away, and there was much silt at the bottom of the pool, with low water storage capacity. According to the investigation of 1952, the old sand dam in the original irrigation area was destroyed by water, the main water source was interrupted and the pond water dried up. Huainan railway passes through the canal, and some water sources are cut off, so the irrigation area is nominal. From the winter of 1952 to the spring of 0953, the water diversion and storage facilities of Caichengtang were renovated, and the 1 Woqi roller dam and 1 three-hole intake gate were built. From the winter solstice of 1954 to the spring of 1955, more than ten projects, such as sluice and spillway, were rebuilt. 1956 repaired the sluice. 1968 to 1974 dig the bottom of the pond, raise and widen the ridge. Today, Caichengtang has formed a lake with a length of nearly 6 kilometers from north to south and a width of 0.5 ~ 1.0 kilometers from east to west, with a water surface area of 3. 1 square kilometer, a controlled inflow area of 86.3 square kilometers and a total storage capacity of 4.92 million cubic meters. In dry years, it is replenished by pumping water from Gaotang Lake.

From 27 to 36 years of the Republic of China, the riverbed of Heyaohe River was shallowly silted from the mouth of Gaotang Lake to the mouth of the river, with an average siltation height of1.5m. During the flood season, the flood stopped for a long time, and the low-lying land was soaked in water for a long time, making it impossible to cultivate farmland. 195 1 March to 195 1 May, Fengyang county, as a Huaihe River regulation project, applied for state subsidies and organized migrant workers to dredge the section from Yaozhen to Xinchengkou in He Yao. The length of the dredged reach is 7.8km, the designed river bottom elevation is 13.0m, and the bottom width is 22.0m The state allocated 3 100000 kg of rice and 90 14000 m3 of earthwork, which improved the farming conditions in some low-lying areas.

From April1954 to March 1955, the ancient city dam was built on the southwest bank of the northern ancient city of Yongkang Town in the upper reaches of Luo Qing. 1956 to 1957, the diversion irrigation project of Luohe dam will be built on the Luo Qing River near Luoqing Town, Dingyuan County, and the inflow area will be controlled at 194 square kilometers. 1959, in the right bank of Luohe River in the southeast of Gaotang Lake, near Luqiao Town of Dingyuan County, Luqiao Electric Irrigation Station was built to improve farmland irrigation near Tanghu Lake in the west of Dingyuan County. At present, seven stations with six levels have been built, with a total lift of 79.5 meters and 56 installed units (68 designed and installed), with a total capacity of 14975 kW. The irrigation area involves 15 townships in Dingyuan county, 4 state-owned farms in Changfeng county and 1 township. The designed irrigation area was finally 574,600 mu, recently it was 460,000 mu, and now it has reached 4 1.6 million mu. /kloc-In the winter of 0/959, Qiguzheng Reservoir was built in the upper reaches of Luohe River, a tributary of Heyao River, between Zhuwan and Xisanlidian in Dingyuan County. 196 1 stop construction, 1970 continue construction, 1972 basically completed. Qiguzhen Reservoir can hold the local water, regulate the water coming from Luo Qing Sesame Reservoir and the water coming from the fourth stage of the Furnace Bridge, and it is the reverse regulation reservoir of the Furnace Bridge Electric Irrigation Station together with Sesame Reservoir. The flood control check standard of Qiguzheng Reservoir reaches once in a thousand years, and the check flood level is 73.45 meters, corresponding to a storage capacity of 22.3 million cubic meters, a storage capacity of13.3 million cubic meters and an irrigation area of 33,000 mu.

1965 A furnace bridge was built in the area of furnace bridge in Dingyuan County on the southeast coast of Gaotang Lake, which benefited in that year and protected the cultivated land in the embankment 16200 mu. Embankment starts from the left bank of Jianyan River in the north, reaches Huainan Railway in the west, and reaches the right bank of Luoqing River in the south, with a total length of 10.8km ... The elevation of dam crest is 23.5 ~ 25.0 meters, and the dike design standard is once every 20 years. There is a 1 Beihu sluice in the middle of the dike, which is the first inlet sluice of the first-class station of Luqiao Electric Irrigation Station in Dingyuan County.

In order to solve the problem of backward flow of Huaihe River, Dingyuan, Fengyang, Changfeng and Huainan agreed to build He Yao River levee and He Yao River sluice in the winter of 1965. The closure dike length of Heyao River is 1 1.75 km, which is connected to the circle dike of Tianjiaan in Huainan City of Yangyingzi in the west and Shangyao Town in the east. 1966 was completed in winter, with the crest elevation of 24.0 meters, and then stone slope protection was built one after another, with a length of 5.05 kilometers. The state invested 2.5 million yuan to complete the earthwork 1 17 18000 cubic meters, and the earthwork was 68000 cubic meters.

He Yao Gate is located in the west of Shangyao Town in the northeast of Huainan City, with a drainage area of 65,438 0.500 square kilometers. The flood control standard of sluice is the same as that of Huaibei levee, which can not only prevent the Huaihe River from flowing backwards, but also ensure that the industrial water used by towns along the lake and Huainan railway is not threatened by floods. It can also control the water level of Gaotang Lake, provide water for the electric irrigation stations along the lake such as Furnace Bridge and Guantang, and connect the highway traffic between Bengbu and Huainan. The sluice project started in February 1965 and was completed in May. The sluice is a reinforced concrete cover plate structure with 5 holes, each with a clear width of 5 meters. The middle hole is navigable, with the gate bottom elevation14.0m and the normal water level17.5m.. The maximum flood control water level is 2 1.0m above the sluice, and the designed maximum flow rate is 6 10 m3/s at 24.5m below the sluice, with a check of 700 m3/s and a flood control area of 200,000 mu. There are 12 stations along the lake, with a total irrigation area of 380,000 mu, designed irrigation area of 770,000 mu, and earthwork129,500 cubic meters, with a total investment of 736,000 yuan.

1966 to 1975, Yongfeng Reservoir was built in Changfeng County, a tributary of Luohe River. The water collection area of the reservoir is 3 1.6 square kilometers, which is the anti-regulation reservoir of the east main canal of Pishihangwa, mainly supplying water for Yongfeng and Zuodian electric irrigation stations. The reservoir is divided into two reservoirs. The East Reservoir started in the winter of 1966 and was basically completed in 1969. Xiku started construction in the winter of 1974 and was completed in 1975. The main project consists of homogeneous earth dam, flood discharge culvert and irrigation culvert. The elevation of dam crest is 44.2m, the elevation of breakwater crest is 45.5m, the dam length is 2093m, the width of dam crest is 4m, and the maximum dam height is11.5m. The flood control standard is once in a hundred years, and it is checked with the maximum possible rainfall. The checked flood level is 44.02 meters, corresponding to a storage capacity of 32.89 million cubic meters and a storage capacity of 6.5438+0.583 million cubic meters. The irrigation area is 90,000 mu, the earthwork is 734,000 cubic meters, and the total investment is 6.5438+287,900 yuan.

1969165438+10 The Guantang Electric Irrigation Station was built in Guantang Township, west of Fengyang County, on the east bank of Gaotang Lake. When it was first built, it was a mechanical irrigation station, and 1970 was changed into an electric irrigation station, pumping water in three stages, with a total net lift of 43.6 meters, a total installed capacity of19 * * 4,438 kilowatts, and a designed irrigation area of133,800 mu. By the end of 1976, all stations have been completed.

197 1 winter, the construction of Sesame Reservoir in the upper reaches of Luoqing River, a tributary of He Yao, started. The reservoir is located between Qingshanji and Zhimadian in the west of Dingyuan County, with a catchment area of 49.4 square kilometers. 1972 was completed in autumn, bringing benefits into play. It not only stopped the local runoff, but also acted as the anti-regulation reservoir of Luqiao electric irrigation station. Excess flood water from the reservoir can be introduced into Qijiazhen Reservoir. There are pearl springs in the reservoir catchment, and the flow rate is about 0.36 cubic meters per second. The reservoir dam is a homogeneous earth dam with an open spillway and four drainage culverts. The dam crest elevation is 74.8 ~ 75.2m, the breakwater crest elevation is 76.2m, the crest length is 1960m, the width is 4m, and the maximum dam height is 19m. The reservoir has reached the once-in-a-million-year flood control standard, and the checked flood level is 74.75 meters, with a corresponding total storage capacity of 242 1 10,000 cubic meters and storage capacity of1564 million cubic meters. Three main canals have been built, connecting Qiguzheng Reservoir, Luqiao Electric Irrigation Station and Reservoir Irrigation Area respectively, with an irrigation area of 40,000 mu. * * * Completed earthwork of 646,800 cubic meters, with a total investment of 1.87 1.55 million yuan.