en.Wedoany.com Reported - The traffic tunnel for the Liaoshui Xinneng (Fushun) "Compressed Air + Flywheel" Energy Storage Project, undertaken by China Railway 18th Bureau Group, officially commenced excavation in Xinbin Manchu Autonomous County, Fushun City, Liaoning Province, marking a new milestone in the project's construction. This project is the first demonstration project in Liaoning Province combining Compressed Air Energy Storage and Flywheel Energy Storage. It covers a planned area of approximately 60,000 square meters, with a total installed capacity of 100 megawatts, an energy storage scale of 400 megawatt-hours, and includes a supporting 10-megawatt flywheel Energy Storage System.
China Railway 18th Bureau Group is responsible for the construction of the underground gas storage caverns. The main structures include the gas storage caverns, sealing plugs, and the traffic tunnel. The gas storage facility adopts a ring-shaped cavern layout, with an excavation cross-section diameter of nearly 17 meters. The total length of steel lining welding reaches 12,000 meters, and the concrete pouring volume exceeds 60,000 cubic meters. From the perspective of project progress, the breakthrough of the traffic tunnel signifies that the project has transitioned from portal and preparatory works to the construction stage of the main underground access tunnel, creating the necessary working conditions for the excavation of the main gas storage caverns.
The traffic tunnel that has broken through is designed as a standard two-lane tunnel, with a total length of approximately 267 meters, and connects to an existing branch of the water conveyance tunnel. This passageway serves both as the access route for the subsequent construction of the main gas storage caverns and as the transport route for equipment and materials. It is a critical working face and transportation channel for the underground gas storage facility construction. The project team has completed preliminary preparations regarding construction organization, resource allocation, schedule planning, and specialized plans, providing the conditions for continuous tunnel excavation.
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