Anhui water conservancy project

Maojianshan Reservoir, a medium-sized reservoir, broke ground in June 1958. /kloc-0 completed in April, 965. The dam site of the reservoir is located in the countryside of Maojian Mountain in Yuexi County. The dam is an earth-rock dam with clay core wall, with a height of 72.7m and a crest length of 215m. The designed storage capacity is 53.95 million cubic meters, the actual storage capacity is 45.53 million cubic meters, the effective storage capacity is 26.82 million cubic meters, the catchment area is 202 square kilometers, the dead water level is 345 meters, the normal high water level is 365 meters, and the water storage area is 2.4 square kilometers. The reservoir area flooded cultivated land 1965 mu, and the immigrants moved 282 1 person. Qianshan County has Wu Shiyan Irrigation District and Yujingzha Irrigation District.

Wu Shiyan is located at Wu Shiyan Pass on the right bank of Anhui River, at the northwest of the county 10 km. Since the 19th year of Emperor Xian of Han Dynasty (2 14), Wu Shibei, the satrap of Lujiang River, has been rebuilt and strengthened many times in history. However, due to repeated destruction, the benefit is very low.

1954, Anhui Provincial People's Congress put forward the case of harnessing Wu Shiyan, decided to host it by Anhui River Engineering Office, and immediately made a plan: build a sand barrier outside the sluice, open a new diversion canal and a new ditch, adjust the high ditch and cross the mountain ditch, cancel Majia sluice, restore Baihugou and build a new diversion sluice. 1954 10 set up "Qianshan County Reconstruction Wu Shiyan Water Control Project Office" to organize the construction. 1 16 10/6, mobilized 1900 people to work in Panpu, Jiaohe, Shiyan, Yujian and demonstration towns in the beneficiary areas. By April, 1955, the above projects were completed. 1955, 1 0 ——1956 In the spring, the intake sluice of Wu Shiyan moved up 100 m and was rebuilt into a double-hole sluice with a height of 2 m and a width of/kloc-0 m. * * The earthwork volume is 57 1 15 cubic meters. Wanhe Engineering Office contributed 50,000 yuan, and private funds raised 23,700 yuan. Irrigated farmland/kloc-0.03 million mu. /kloc-In the winter of 0/957, the Bailu River spillway ditch, which is nearly 2 kilometers long and 8 meters wide at the bottom, was opened to prevent the landscape from entering the dike. In the winter of 1959, the Mei River, a tributary of Anhui, was cut off, which reduced the dam from 12 km to 7.5 km. 1July, 969, Wu Shiyan levee burst, which was repaired that year, and * * * made 550,000 cubic meters of earthwork. 1972 in order to eliminate snails, three drainage ditches were reformed to make the irrigation area a snail-free area. 1975 rebuild the intake gate of Wu Shiyan, change the stoplog wooden door into reinforced concrete slab gate, and use two 5-ton hoists to open and close it, and mobilize migrant workers to rectify the Dongguan River downstream of the irrigation area. In the winter of 1976, the irrigation area mobilized 6,000 laborers, opened 5 large ditches and 4 small ditches 14, leveled 9,000 mu of land, relocated 82 households, moved 4 houses17 rooms, moved more than 2,000 coffins and moved 560,000 cubic meters of earth. Since then, Wu Shiyan Irrigation District has taken on a new look. The irrigated area reached 1.4 million mu, 3.5 times that before the founding of the People's Republic of China. The severe drought in 1978 not only ensured the bumper harvest of farmland in the irrigation area, but also had enough water to support the farmland irrigation in Meicheng and Youba Commune. 1987, 1 7 kW electric irrigation station was built at Wu Shiyan Sluice for pumping water to irrigate farmland. In the same year, the sand dam outside Longzha was extended by 60 meters, and the water intake was moved up to Wu Shiyan Ferry, which improved the water diversion conditions. The county hydropower department invested 42,000 yuan in these two projects.

Yujingzha Irrigation District is located in Yujing Township on the left bank of Anhui River. 1winter solstice in 9551spring in 956, Anqing Special Zone Water and Electricity Bureau invested 13000 yuan to concentrate migrant workers in the benefit areas of Qian and Huai counties, and built a new intake sluice with a diameter of 1.7 m and a width of 1.2 m, which was made of wood. * * * More than 3,800 cubic meters of earthwork and 285 cubic meters of stonework were completed, with a total labor of 284 1. /kloc-in the winter of 0/955, Yujing District organized migrant workers to repair the dam below Zhuoyue River to integrate Yujiang River. During the spring of 1957- 1958, the Water and Power Bureau of Anzhiyuan invested 3,800 yuan to organize the people in the beneficiary areas to open the main canal from Yujingzha to Wangjiabang in Dongshan at 13 km, and completed five ancillary projects. * * * 52,000 cubic meters of earthwork, 38 cubic meters of stonework and 32,700 workers. At the same time, Wangjiabang Dongshan 1 Old Gate will be built. 1961-1In the spring of 1962, Block L of Dongshan New Gate was built next to the old gate. After consultation between Qianping and Hu Aiping counties, Huaining County built a mechanical irrigation station in Liujiaxinwu, Qianshan, and pumped the remaining water from the irrigation area to irrigate the farmland around Maoan, Huaining. Widening drainage channels for buried hill in Huaining County outside Dongshanmen to eliminate internal water accumulation. The drought of 1966 benefited from the irrigation of Maojianshan reservoir in the upper reaches of Anhui Province. Yujing Commune mobilized thousands of migrant workers, extended the main canal of Yujingmen to the entrance of Sichuan, cut mountains at the entrance of Sichuan, and opened two ditches with a length of * * * 13 kilometers to divert water to irrigate the farmland of two brigades, Ma Dao and Feng Wan. 1969, the flood washed away the remaining wells Zhangjiawan and Doulusi dam, and the irrigation area suffered devastating disasters. The county revolutionary Committee quickly mobilized the masses to block the mouth and restore the embankment, and resumed production that year. In the process of water treatment in Anhui, the remaining well dikes, namely Zhangjiawan, Kunsandou and Doulvmiao, were straightened, and new revetments were built in dangerous sections, such as Zhangjiawan, Shangqiao, Diaoguanlou, Kunsandou and Zhuoyuehe, and the sand dam was paved with pebbles, so that the dikes in the irrigation area reached the flood control standard of "once every 20 years". 1975, the state subsidizes 4000 yuan, replacing the remaining wells with reinforced concrete slab gates and hoisting them. Sediment is often deposited at the entrance of irrigation area. 1986 10, 50,000 yuan was invested from the construction fund of commodity grain base, and the water inlet was moved to 4 kilometers of Yutan sluice, and the Yutan sluice was transformed into a double-hole reinforced concrete flat door, which was opened and closed by a hoist. The newly-opened main canal is more than 4,000 meters long. The newly-opened main canal 1 spillway gate and the Changchong River 1 spillway gate were completed in the summer of 0987. * * * Completed earthwork 2 1500 cubic meters, stonework 650 cubic meters, dry masonry 559 cubic meters, mortar masonry 470 cubic meters and concrete 99 cubic meters. 1in the autumn of 1987, the county agricultural bureau and the hydropower bureau jointly invested 40,000 yuan to build a 1.7 km filter layer in the third bucket of Yujing levee. Open 6 "well" ditches with a length of 2 kilometers; Change retting (retting paddy field) to expand the afternoon (expanding crops) by more than 700 mu. Through continuous construction and management, the self-flow irrigation area of Yujingzha Irrigation Area is 6330 mu (designed benefit is 8030 mu), and the water lifting irrigation area is 1986 mu (designed benefit 12270 mu).