In the height of summer, sustained high temperatures pose severe challenges to open-air construction work. Yet at the construction site of the Weifang-Suqian High-Speed Railway (Xuzhou Section) project undertaken by China Railway 12th Bureau Group, heat waves rise and machinery roars. Frontline builders brave the "roasting" test, stay focused on construction goals, and strictly uphold the bottom lines of safety and quality. Construction in this contract section mainly involves bridges and subgrade works, with complex procedures, high technical standards, and heavy construction tasks. Recently, temperatures above 35°C have occurred repeatedly, constraining multiple key procedures such as concrete curing, box girder prefabrication and erection, and subgrade filling. The project is under dual pressure to advance the schedule and ensure safe production.

　　Facing the "major test" of extreme heat, China Railway 12th Bureau Group has implemented a work mechanism of "off-peak construction and balancing work with rest," avoiding the midday high-temperature period and concentrating personnel and equipment to carry out construction during the cooler morning and evening hours. This efficiently advances key procedures such as pile foundation finalization, pier shaft construction, and subgrade trimming, maximizing construction efficiency. At the same time, high-temperature quality control requirements are strictly enforced, with routine concrete temperature control, subgrade compaction testing, and structural safety inspections to prevent quality risks caused by high temperatures and ensure standardized construction.

　　As of now, bridge pile foundations and pier shafts are nearly 100% complete, laying a solid foundation for subsequent bridge deck erection. The overall completion of subgrade works exceeds 90%, with subgrade shaping, slope protection, and drainage system construction advancing simultaneously. Total box girder prefabrication across the line has exceeded 65%, all 204 box girders for the Xinyi South Grand Bridge have been prefabricated, and box girder erection has surpassed 54% of the designed total.

　　Rushing progress requires even greater attention to safety, and battling high temperatures requires protecting frontline workers. The project department of China Railway 12th Bureau Group adheres to a people-oriented approach, having purchased more than 600 jin of watermelons in total and stockpiled heatstroke prevention supplies such as mung beans, Huoxiang Zhengqi liquid, and cooling oil, fully covering the cooling needs of the construction frontline. It has also innovatively created mobile heat-relief "water bars" and established a routine cooling service mechanism. Led by the on-site deputy manager, engineering shuttle vehicles are dispatched at scheduled times each day to deliver iced mung bean soup, drinking water, heatstroke prevention medicines, and other supplies to each construction point.

　　Next, the Project Department of Section 1 of the Weifang-Suqian High-Speed Railway (Xuzhou Section) of China Railway 12th Bureau Group will continue to closely track annual goals and key milestones, uphold the spirit of craftsmanship, and go all out to complete the annual construction tasks, contributing infrastructure strength to the project's early opening to traffic and to regional coordinated development.