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The Dashixia Water Conservancy Project is located deep in the Tianshan Mountains of Xinjiang. It is one of the major water conservancy projects in China for water conservation and water supply. It aims to improve water resources distribution and flood control capabilities in southern Xinjiang through comprehensive functions such as hydropower generation, ecological water transportation, irrigation and flood control.
Xinhua News Agency, Beijing, September 29 (Reporters Dai Xiaohe and Du Gang) The first batch of Units 1 and 2 of the Xinjiang Dashixia Water Conservancy Project invested and constructed by China Energy Construction Gezhouba Group were connected to the grid to generate electricity on the 29th. As one of the major water conservancy projects for water conservation and water supply in China, the commissioning of the first batch of units marks that this "super project" standing deep in the Tianshan Mountains has begun to fully exert its ecological, irrigation, flood control and power generation benefits.
The Dashixia Water Conservancy Project broke the world record for concrete-faced gravel dams with a maximum dam height of 247 meters. The power station has a total installed capacity of 750,000 kilowatts and is equipped with three Francis turbine generator units with a single capacity of 250,000 kilowatts. It is the first cylindrical valve Francis unit in China that is suitable for high water head and multi-sediment conditions. It can adapt to the harsh conditions of large water head changes, high sediment content, and high particle hardness.
Faced with the local dry and windy climate and harsh geological conditions prone to landslides, the construction team overcame difficulties and implemented digital control during the installation process, ultimately achieving ultra-high-precision installation of core components. During the trial operation, key indicators such as unit vibration, swing, and bearing temperature performed excellently.
As a comprehensive water conservancy hub that integrates ecological and livelihood benefits, the Dashixia Project will have an average annual power generation of 1.893 billion kilowatt-hours after it is fully put into operation, which can meet the annual electricity demand of approximately 600,000 households. It will also undertake the peak load regulation task of the power system in the four prefectures of southern Xinjiang, effectively alleviating the pressure on regional power supply. At the same time, the reservoir can transport 3.42 billion cubic meters of ecological water to the Tarim River every year, alleviating the water shortage problem of more than 6.8 million acres of farmland in the Aksu River Basin. It also raises the flood control standard of the downstream river from a return event of 10 years to a return event of 50 years, significantly improving the flood prevention and disaster reduction capabilities of the basin, and greatly promoting the modernization of agriculture in southern Xinjiang.

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