recently, with the success of the "first explosion" in the excavation of the tunnel body, the traffic tunnel of Zaozhuang Shanting pumped storage power station constructed by Hefei branch of China's aneng first bureau officially entered the tunnel construction, marking that the tunnel construction of the project has entered a substantial stage of advancement, laying a solid foundation for the subsequent construction of underground powerhouse and supporting projects.

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the project is located in shanting district, Zaozhuang city, Shandong province, with a total investment of about 8.44 billion yuan and a total installed capacity of 1180 MW, it is a second-class large (2) project. The power station has installed 4 vertical shaft mixed-flow reversible units with a single unit capacity of 295 MW. The designed annual power generation capacity is nearly 2 billion kWh. The overall construction standard is high and the project scale is large. It is a key project in the construction of regional energy infrastructure.

Project renderings

As one of the key control projects of power station construction, the incoming traffic tunnel is the core passage in and out of the underground powerhouse caverns of the pumped storage power station. It is mainly responsible for the excavation and slag extraction of the underground powerhouse of the project, as well as the transportation of various large-scale equipment such as water turbines, generators, and main transformers. The total length is 1300.9 meters, the cross section adopts a round arch straight wall type, and the net size of the cross section is 8.0 meters × 10.5 meters. The geological conditions of the area where the tunnel is located are complex, the soft and hard rock formations are staggered, the construction is difficult, and the safety risk is high, which puts forward extremely strict requirements for the accuracy of the construction process and the control of the whole process on site.

Theme Party Day Activities

In addition, the project team actively joined forces with the owner, design, supervision and other units, many times organized industry experts to carry out special demonstration, combined with the complex geological conditions on the site, tailor-made "accurate detection, dynamic support" special cave body excavation and support construction plan, comprehensively avoid geological risks and ensure construction safety; At the same time, a special working group was set up to efficiently promote the land acquisition and demolition of the cave entrance, the leveling of the construction site and the construction of temporary construction access roads, so as to open up the pre-construction blocking points, it provides solid personnel, technology and site support for the smooth and orderly progress of the project.

Zaozhuang Shanting Pumped Storage Power Station is a key project in the "14th Five-Year Plan" energy plan of Shandong Province. After the completion of the power station, it is expected to be able to eliminate about 2.6 billion kilowatt-hours of green power per year and generate nearly 2 billion kilowatt-hours of electricity per year. It will effectively improve the utilization efficiency of intermittent renewable energy such as wind power and photovoltaic, and solve the problem of new energy consumption. The power station can be called the "green charging treasure" for peak regulation, valley filling and emergency backup of the power grid. After completion and operation, it will significantly improve the power supply reliability of the regional power grid, help optimize and adjust the energy structure, and promote the green and low-carbon transformation of regional energy.