京沪铁路下行线拨接施工顺利完成，可过渡京沪铁路既有与新建线路

Core Points - The completion of the Yanzhou North Station expansion project enhances the operational efficiency of the station and strengthens the connectivity of the Beijing-Shanghai and Xin-Yan railways [14] Group 1 - The construction involved a total of 270 minutes of blocking work, with multiple professional teams collaborating to complete key switching operations over a distance of 3.1 km of newly built railway [5] - The project faced challenges such as tight construction time, large engineering volume, high safety risks, and multiple coordination points, which were addressed through advanced management and planning strategies [9] - Nearly 1,000 workers were deployed, along with 18 excavators, and drone technology was utilized for real-time monitoring and unified scheduling [9] Group 2 - The Yanzhou North Station is the largest railway freight marshalling station in southwestern Shandong and serves as a critical support point in the province's railway freight network [14] - The expansion project facilitates a smooth transition between existing and new railway lines, promoting an overall upgrade in the regional railway network's functionality [14]