On November 5, the dam body filling works of the upper reservoir of the Luanping Pumped Storage Power Station in Hebei, constructed by Sinohydro Bureau 4 Co., Ltd., officially commenced, marking that the core component of the station's "green engine" has entered the construction phase.

The Luanping Pumped Storage Power Station in Hebei is one of China's first batch of "mining-power integration" demonstration projects. Located in Xiaoying Town, Luanping County, Chengde City, Hebei Province, it mainly consists of structures such as the upper reservoir, water conveyance and power generation system, and lower reservoir, and combines energy conservation, environmental protection, and ecological restoration functions. With an installed capacity of 1,200 MW, the station is equipped with four vertical-shaft single-stage single-speed reversible Francis pumped-storage units of 300 MW each, and is a Class I large-scale project.

Sinohydro Bureau 4 Co., Ltd. is undertaking construction of the upper reservoir, water conveyance works, water replenishment works, lower reservoir, underground power generation structures, booster substation works, traffic works, safety monitoring works, and other content. The upper reservoir dam adopts a reinforced concrete face rockfill dam structure, with a dam crest elevation of 944 m, a crest width of 10 m, a dam axis total length of 2,872 m, a maximum dam height of 109 m, and a normal storage level of 940 m. The dam body filling structure, from upstream to downstream, consists of the cushion zone, transition zone, and main rockfill zone, and the downstream dam slope is protected by precast concrete blocks. The total earthwork and rock excavation volume of the project is approximately 9.182 million cubic meters, and the total filling volume is approximately 8.178 million cubic meters.

During the project preparation stage, in the face of complex geological conditions such as well-developed joints and fissures in the project area and severe weathering of surface rock masses, the project management team took the initiative and effectively overcame geological challenges through a series of measures including detailed geological surveys, optimization of construction technical plans, and implementation of dynamic quality control, laying a solid technical and safety foundation for the smooth filling of the upper reservoir dam.

As the "energy storage core" of the entire power station, the commencement of construction of the upper reservoir dam is not only a key link in ensuring the overall construction safety and quality of the project, but also an important practice in serving clean energy supply in the Beijing-Tianjin-Hebei region and promoting the construction of a new energy system. It is reported that after the station is completed and put into operation, it will undertake core functions such as peak shaving, valley filling, and emergency reserve for the northern Hebei power grid, with an estimated annual power generation of up to 1.5 billion kWh.