China Railway Construction Heavy Industry's pumped hydro storage TBM breaks record again, helping the country's new energy construction

The Yuanqu Phase II pumped storage power station survey tunnel project is located in Jieyu Township, Yuanqu County, Shanxi. It is a key national renewable energy and hydropower development project and a pilot project for the comprehensive reform of Shanxi’s energy revolution. Key projects. The total construction length of the project is 1,450 meters, the minimum turning radius is 140 meters, and the maximum longitudinal slope is 5‰. The excavation stratum is mainly made of hard rocks such as quartz sandstone. Railway Construction Heavy Industry fully combines the actual local engineering conditions to provide customers with customized services in the whole business process of "design-production-service".

It is reported that after completion, the project will undertake a number of important tasks in the Shanxi power grid system, and will be of great significance to the local area in promoting industrial transformation, optimizing the energy structure, and improving people's livelihood and well-being.

In March this year, the "Pingjiang" TBM designed and manufactured by China Railway Construction Heavy Industry was under construction in the artesian drainage tunnel of the Pingjiang Pumped Storage Power Station, the largest pumped storage power station under construction in Hunan. It has set a domestic record of the highest monthly footage of 602.1 meters for small-section TBM construction at the same level.

The drainage corridor tunnel of Pingjiang Pumped Storage Power Station is about 9.2 kilometers long, with a tunnel diameter of 3.6 meters, a maximum slope of 4.9%, 21 bends, 1 S bend, and a uniform turning radius. The total length of TBM excavation is 30 meters, and the total length of TBM excavation is 7003 meters. The construction of the project is difficult.

"Pingjiang" has an excavation diameter of 3.63 meters, a length of 75 meters, a minimum turning radius of 30 meters, and a total machine weight of 230 tons. During the equipment design and production stages, Railway Construction Heavy Industry strictly controls the quality of the equipment. Customer supervisors are at the factory to supervise. Relevant departments of the enterprise actively cooperate and promptly answer and handle the questions raised by the supervisors. When the equipment enters the construction stage, Railway Construction Heavy Industry Co., Ltd. The Jianhe Heavy Industry Service Group provides comprehensive life-cycle services, providing technical guidance on assembly and commissioning, trial excavation, and warranty period according to customer needs, and cooperates with customers to optimize operating procedures, improve excavation parameters, and strengthen construction management.

The new open TBM produced by China Railway Construction Heavy Industry has achieved initial results in pumped storage projects, which has laid a solid foundation for the application of TBM in pumped storage projects and will vigorously promote pumped storage. The development of mechanized construction in the energy field.