en.Wedoany.com Reported - On April 1st, the first concrete pour for the crane girder on the rock wall in the underground powerhouse of the Changbo Hydropower Station, located in Sichuan Province, China, was successfully completed. The pilot shaft that was holed through has a diameter of 3 meters and a total length of 157.5 meters. According to the design plan, the final total diameter of this shaft will be expanded to 7.3 meters, classifying it as a typical large-diameter, ultra-deep shaft project.
The crane girder on the rock wall at the Changbo Hydropower Station is installed on the second level of the underground main powerhouse. The upstream side has a length of 161.1 meters, the downstream side 161.85 meters, resulting in a total length of 322.95 meters on both sides. The entire structure is divided into 25 segments for batch pouring. The construction team adhered to the principle of "establishing standards with the first piece, setting benchmarks with the model," integrating the goal of "excellence from the first pour, continuous excellence throughout the process" into the entire construction procedure for the crane girder on the rock wall. From the precise operations of rock bench excavation to the accurate positioning of anchor bolts; from the strict selection of aggregates to the repeated verification of mix proportion tests; from the standardized work of steel reinforcement binding to the tight alignment during formwork installation, the project department controlled every aspect through high-standard management, steadily advancing the project construction.
The completion of this first concrete pour represents a concrete practice by the Changbo Hydropower Station project department in creating a high-quality project and implementing its positioning as an industry demonstration. Next, the team will strengthen concrete curing, comprehensively summarize and optimize construction techniques, and advance the pouring of subsequent segments with strict standards, striving to establish a model for underground engineering construction and contribute to the realization of the high-quality project goal.
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