Dam of Guangxi's First Pumped-Storage Power Station Upper Reservoir Filled to the Top

2024-12-24 4149 0人评论

On December 18, the upper reservoir dam of the Nanning Pumped Storage Power Station, Guangxi's first pumped storage power station, was filled to the top.

During dam construction, the project department actively developed and applied BIM technology and information technology to guide reservoir construction and make production control more refined. To resolve various unfavorable factors, overcome the cut-and-fill balance challenge, and meet schedule requirements, the project department continuously adjusted and optimized the construction organization and technical plans. In less than half a year, it adjusted the schedule plan 3 times, the excavation plan 5 times, the dam filling plan 4 times, and the slope support plan 7 times. In July 2024, the rockfill placement volume exceeded 300,000 cubic meters, and in August and September it again exceeded 400,000 cubic meters. To achieve the dam topping-out goal, the project team strengthened control over dam filling quality, borrow area excavation and support, and optimized zoning adjustment of the dam structure, and carried out on-site construction operations in an orderly manner. Through the "Party Member Vanguard Team" and "Youth Commando Team" playing a leading role, the integration of Party building leadership with production and operations was promoted. All project builders went all out and successfully completed various milestone tasks, including breakthrough of the diversion tunnel, commissioning of the batching plant and aggregate system, first concrete placement, breakthrough of the headrace upper horizontal tunnel, and dam topping-out.

The Guangxi Nanning Pumped Storage Power Station is Guangxi's first pumped storage power station and one of the 102 major projects in the 14th Five-Year Plan. It has a total installed capacity of 1.2 million kilowatts and an annual power generation capacity of 1.6 billion kilowatt-hours, and is scheduled to be put into operation for power generation in 2025. The upper reservoir undertaken by Sinohydro Bureau 8 is located at the summit of Baizao Mountain. It is a concrete face rockfill dam with a total crest length of 499.5 meters and a maximum dam height of 92.5 meters, making it the highest concrete face rockfill dam project built or under construction by China Southern Power Grid.


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