I. Overview of the Project
Gongboxia reservoir irrigation project consists of diverting water from Gongboxia reservoir and building main and branch canals on both sides of the Yellow River. , mainly to solve the problems of irrigation and drinking water for people and livestock on both sides of the Yellow River Basin in this area. This project is the key water conservancy project in the tenth five-year plan of our province.
The project area is located in the downstream of Gongboxia Hydropower Station, the main stream of the Yellow River in Qinghai Province, and belongs to Xunhua Salar Autonomous County and Hualong Hui Autonomous County. The precipitation in this area is 259.4mm, the evaporation is 2206.4mm, and the ditches and rivers are mostly seasonal rivers with dry climate, which is known as "dry cycle".
The population of the project area is 83,000, and there are 70,300 livestock (only), including 210.80 million poor people, so it is difficult for people and livestock to drink water. Due to water shortage, the economic development in the project area is slow, people's lives are difficult, soil erosion is serious and the ecological environment is deteriorating. The lag of water conservancy infrastructure construction is the main factor restricting the economic and social development in this area for a long time.
Therefore, the construction of this project is not only a prerequisite for the people in this area to improve their production and living conditions and get rid of poverty and become rich, but also an important infrastructure for the ecological environment construction on both sides of the Yellow River Basin, which is the hope for economic development, social stability and environmental improvement in this area.
Second, the main construction content, investment and benefit of the project
The main content of the project construction is that the north main canal is 26.36 kilometers long and the design flow is 3.4 m3/s; The total length of the south trunk line is 3 1.36km, and the design flow is 4.8m3/s; There are 66 branches, 126.7 km.
The total investment of the project is 354.99 million yuan, and the construction period is 3 years. After the completion of the project, control the irrigation area 109300 mu, including 50400 mu on the north bank of the Yellow River and 58900 mu on the south bank. The project has no complicated technical problems and is technically feasible.
The construction of the project will greatly improve the production and living conditions of the Salar and Hui people, lift 2 1800 people out of poverty and become rich, promote and develop the economy in ethnic areas and promote social progress. At the same time, it will make the banks of the Yellow River tree-lined, surrounded by clear water and have a beautiful ecological environment.
Third, the preliminary work
Our province attaches great importance to Gongboxia reservoir irrigation project. In order to improve the design quality and save the upfront investment, our province adopted the form of inviting tenders from inside and outside the province in May 5438+0, 2006, which is the first time that our province adopted the form of inviting tenders from inside and outside the province to carry out the preliminary work.
Project planning and project proposal were won by Gansu Water Conservancy Design Institute and completed on 200 1 10.