On May 18, the foundation pit in the north zone of the Lingang Comprehensive Zone Station, Section 6 of the Shanghai Municipal Railway Nanhui Branch Line, was successfully sealed at the bottom. The project is invested in and constructed by Shanghai Shentie and built by Shanghai Road & Bridge of Tunnel Engineering Co., Ltd. This marks the removal of the greatest safety risk in the deep foundation pit construction in the north zone of the station, laying a solid foundation for the subsequent backfilling of the station's main structure and shield receiving operations.

▲ Rendering of Lingang Comprehensive Zone Station

Lingang Comprehensive Zone Station of Section 6 is located at the intersection of planned Qiaojiang Road and Zhoutao Road in the Lingang Special Area. It is an underground two-story island-type station with a total length of 312.5 meters and a standard section width of 20.7 meters, featuring 6 entrances and exits and 2 sets of ventilation pavilions. The main foundation pit of the station is divided into two construction zones, north and south, of which the north zone foundation pit is 96.6 meters long, with an excavation depth ranging from 18.8 meters to 21.2 meters.

During the foundation pit excavation, challenges such as limited working space and high requirements for foundation pit deformation control existed. Under the overall deployment and advance organization of Shanghai Shentie, the project team strictly implemented the safety and quality management system. Through the "smart construction site" operation management platform, it conducted remote real-time supervision of the entire process of on-site personnel, machinery, and materials, providing a strong guarantee for the safe and orderly progress of construction. In addition, the foundation pit excavation process was continuously adjusted and optimized, with 24-hour real-time monitoring by zone on site, strict implementation of the foundation pit excavation inspection system, and organization of on-site hazard identification and timely rectification, ensuring the safety of the station foundation pit construction.

The Nanhui Branch Line has a total length of approximately 34.86 kilometers, including a main line of approximately 27.88 kilometers and an east branch line of approximately 6.98 kilometers, with 6 stations across the entire line and a maximum operating speed of 160 kilometers per hour. Upon completion, the project will become a rapid connection channel between the Lingang Special Area and the Pudong Hub, Hongqiao Hub, and the main urban area of Shanghai. As an important support for the Lingang Special Area to radiate into the Yangtze River Delta, it will help the Lingang Special Area realize the function of an international open hub that "connects inside and outside and links land, sea, and air."