Large-scale investment projects in colleges and universities have always received cordial care from the CPC Central Committee and the State Council and strong support from relevant state ministries and commissions. Party and state leaders Hu Jintao, Wen Jiabao, Li Peng, Zhu Rongji, Qiao Shi and Song Ping visited the site. Li Peng and Qiao Shi happily wrote the following inscriptions respectively: "Bring Datong River to nourish Qinwangchuan" and "Bring great rivers into Qin to transform nature, which will make a great contribution to the people in the future". The achievements of engineering construction have attracted worldwide attention and created many miracles in the history of water conservancy construction in Gansu. It used to be a brand and a business card in Gansu. It is the largest external basin water transfer project in Gansu Province since the founding of the People's Republic of China. Since the reform and opening up, it is the first project in Gansu Province to introduce foreign capital, invite international bidding and foreigners to participate in the construction. It is a model project of World Bank loan assistance project; It is the only water conservancy project in Gansu Province that has been written into the Premier's Government Work Report so far. For the first time, it was listed in People's Republic of China (PRC) Construction Achievements Overview and People's Republic of China (PRC) Memorabilia. The application achievements of new technologies, new processes and new materials in Yin Da won the second prize of National Science and Technology Progress Award, the first prize of Gansu Science and Technology Progress Award and the first prize of Gansu Water Conservancy Science and Technology Progress Award, and were engraved in the "Inscription of Bronze Tunnel in China Millennium Monument". It is one of the first patriotism education bases in China; Known as "Dujiangyan in the Northwest" and "Artificial Underground River", it has been rated as one of the top ten construction achievements in the province in the past 30 years of reform and opening up; It is praised by the provincial party Committee and the provincial government as a major moral and political project, popular support project, survival project and development project; It is an important window to show that Gansu adheres to reform and opening up and promotes scientific development. Since 1960s, a large number of water diversion projects have been surveyed and designed by Gansu Hydropower Design Institute. 1976 started construction, 198 1 postponed due to lack of funds. 1985 Gansu provincial party Committee and government decided to restart the project and set up a coordination leading group and a project construction headquarters headed by the governor. The project is built in the form of public bidding at home and abroad. It is a successful example of the meeting jointly held by the Construction Corporation of the Ministry of Railways 15, 16, 18, and 20 bureaus with Gansu Provincial Hydropower Engineering Bureau, Pingliang Hydropower Engineering Bureau, Japan Kumagaya Group, Italy C.M.C Company and Australia. By 1995, the water supply system was completed, with a total investment of 2.269 billion yuan, of which1230,000 US dollars was imported from the World Bank, the national investment was11000,000 yuan, and the rest was raised by local governments.
The water diversion project into Qin starts from Datong River on the west side of Tang Tian Temple in Tianzhu County in the west and reaches Qinwangchuan in Yongdeng County in the east, spanning four cities and counties in Gansu and Qinghai provinces. The project consists of main canal, main canal and branch canal, with a total length of 884.3 kilometers, equivalent to 49.29% of the Beijing-Hangzhou Grand Canal. There are 77 tunnels, 38 aqueducts and 3 inverted siphons along the line, with a total length of 1 10 km, making it the largest "underground canal" in China. The main canal runs from Tang Tian Temple to Luxiang Mountain in Yongdeng County. The total length is 87 kilometers, including 33 tunnels with a total length of 75. 14 kilometers, 9 aqueducts and 2 inverted siphons. The main canal is equipped with a main sluice in Xianglushan, and the water is diverted into Dongyi main canal, Dong Er main canal and 45 branch canals, and then flows into the irrigation area.
A large number of water diversion projects into Qin pass through a group of tunnels with a total length of 1 10 km, which is unique in the history of water conservancy construction in China. It is 79 kilometers and 3.5 times longer than the total length of the 180 tunnel on the "Hongqi Canal". The drainage on the main canal passes through the 30A tunnel with a length of 1 1.65km, passes through the Dashagou aqueduct with a length of 350m, flows into the Pandaoling tunnel with a length of 15.72km, and finally reaches the main gate of Xianglushan. Pandaoling Tunnel is an unpressurized water conveyance tunnel, which is the longest diversion tunnel in China at present, ranking seventh in the world and first in Asia, and is 1.4km longer than Dayaoshan Tunnel, the longest tunnel in China. Among the projects above the main canal, there are 3 tunnels above 1 km, which are rare at home and abroad. Artificial underground river. The total length of Pandaoling Tunnel, the main canal, is 15.723 km, which is the seventh longest tunnel in the world and the longest tunnel in China, and still ranks first in the world among the diversion tunnels, and some worldwide problems have been solved in the construction.
The main canal takes water from the head of Tang Tian Temple in Tianzhu County, with a total length of 87 kilometers. The designed water diversion capacity is 32 cubic meters per second, and the water diversion capacity is increased by 36 cubic meters per second. There are 33 tunnels in the main canal, with a total length of 75 kilometers, and there are two other main canals, the first of which is 50 kilometers long, the second is 54 kilometers long, and the total length of 45 branch canals is about 675 kilometers. The total engineering quantity of a large number of water diversion projects into Qin is 27.4 million cubic meters, and all the projects were completed in 1997.
The water transfer project into Qin has an annual water transfer of 443 million cubic meters and a planned irrigation area of 860,000 mu. It can solve the problem that 283,000 farmers in Qinwangchuan area get rid of poverty and become rich, and arrange 80,000 voluntary immigrants from other poor areas, with an average annual output value of agriculture, forestry and animal husbandry reaching 384 million yuan. It has fundamentally solved the production and living water consumption of 283,000 farmers in 22 townships (towns) in Yongdeng and Gaolan counties, which is of great significance for improving the climate of irrigation canals and building Lanzhou satellite city. A large number of water diversion projects into Qin can be called the first canal in China. In front of Tang Tian Temple, a dancing rainbow added to the beauty of the day; In the middle of Qin Wang Chuan, thousands of green waves compete for love. The project to attract universities into Qin has become an important tourist attraction. Tourism resources along the route include: Forest Park of Beishan Forest Farm in Huzhu, Qinghai, Tang Tian Temple at the head of the canal, Benkang Wheat Field in Zhucha Gorge, Tulugou Tunnel, Tianwanggou Forest Area, Tulugou National Forest Park, Gada Temple, Lutu Temple Yamen, Shuimogou Inverted Siphon Pipeline in Xianming Gorge, Dongda Temple and Dasha Water Diversion into Qin, which provides a large amount of water for the economic development of Qinwangchuan area. Many agricultural sightseeing projects, such as Cao Xi Rose Garden, ostrich breeding base, Nakagawa Forest Farm, etc. As well as many proposed resorts and leisure summer villas, will become a new tourist area in Yongdeng County, a suburb of Lanzhou.
Many magnificent buildings in the project of diverting large universities into Qin are located in Liancheng Tourism Development Zone and Chengguan Tourism Development Zone in Yongdeng County. The Yongdeng County Committee and the government of Lanzhou City attached great importance to the development of this characteristic resource and formulated a series of planning and development goals. Strive to turn resource advantages into economic advantages and increase the stamina of tourism development.