On December 23, 2021, Shanghai Metro Line 15 built with the participation of China Railway Twenty-third Bureau Group Rail Company opened for trial operation. This is China's rail transit line with the longest kilometers and the highest level of fully automated driving. This line is an important north-south line in Shanghai's rail transit network.

Line 15 is Shanghai's fourth rail transit fully automatic driverless line, and it is also the first subway line with the highest level of fully automatic driverless system on the entire line at one time. The Metro Line 15 project starts from Zizhu High-tech Zone Station in Minhang District and ends at Gucun Park Station in Baoshan District, passing through 5 administrative districts including Minhang District, Xuhui District, Changning District, Putuo District and Baoshan District. The line has a total length of more than 42 kilometers and has 30 underground stations, of which 8 stations form interchanges with 9 existing and under construction lines in the road network.

The route opened this time uses the highest level of fully automated driving system in China. In order to ensure the safe and reliable operation of the system network, the construction party adopted 4G network integrated bearer technology for the first time to build a single-system dual-coverage mode, which is mutually backup and can operate independently, ensuring 24 hours uninterrupted signal transmission and greatly improving safety performance.

Overcome difficulties and set a record in the history of subway construction

The longest one-time open line: It is the longest underground line over 42 kilometers in the history of domestic rail transit construction.

The shortest construction period: the project started in August 2016 and was completed by the end of 2020. It lasted 4 years and 4 months. During the period, due to the need for prevention and control of the "new crown" epidemic and key mission guarantees, the actual construction time was only 3 years and 5 months.

The highest level of opening: Shanghai and even the whole country have opened the longest mileage and highest operating level (UTO) fully automatic operation line at one time.

The shortest signal debugging time: the first train was commissioned on June 10, 2020, and the signal debugging was completed on October 4, facing the ultra-long line, after 3 months and 25 days, 24 hours a day debugging, the signal debugging task was successfully completed , The shortest time.

The number of crossings is the most: The project section of Line 15 successfully traverses 57 buildings of various types, and traverses existing subways 16 times; traverses major pipelines such as rainwater pipes with a diameter of 2460mm and raw water pipes with a diameter of 2000mm; 8 times; traverses Beiheng Passage and viaduct 14 times and other major municipal facilities; 8 times through high-speed rail and railway. 23 rivers crossed.

The most control risk points: There are a total of 258 points of various types on Line 15, accounting for 63% of the total number of major construction risks in rail transit construction during the "13th Five-Year Plan" period. Among them, 9 ultra-deep stations are all three-story underground stations One-third of the total), 70 shield machines were put into use across the line, and 140 shield machines entered and exited the tunnel.

Pipeline relocation and traffic guidance and modification are the most frequent: Line 15 involves complicated pipelines in the early stage and harsh traffic organization and environmental conditions. 13 stations involve ultra-high voltages of 110kV and above, DN2000 (diameter 2 meters), Sheung Shui, DN1000 (diameter 1 meter) Gas relocation; roads turned over 168 times.

Connecting 9 university campuses in series, radiating multiple city sub-centers and science and technology parks

Line 15 connects 9 universities with 10 campuses, which is a veritable university-to-university route (Shanghai Jiao Tong University Minhang Campus, East China Normal University Minhang Campus, East China University of Science and Technology Xuhui Campus, Shanghai Normal University Xuhui Campus, Shanghai University of Applied Sciences Xuhui Campus, Gubei Campus of Shanghai University of International Business and Economics, Xianxia Road Campus of Shanghai University of Engineering Science, North Central Campus of East China Normal University, Huxi Campus of Tongji University, Baoshan Campus of Shanghai University), 4 parks, 3 national science and technology parks; It connects Zhenru Sub-center, Changfeng Business District, South Railway Station, Caohejing Science and Technology Park, Zizhu High-tech Zone and other important areas, which will forcefully drive and support regional development; connect Shanghai West Railway Station and South Railway Station hubs, which is important for improving the comprehensive transportation hub. Supporting transportation plays an important role.

Smart subway is a gradual process, a development process from digitization of objects to intelligent execution and finally realization of intelligent decision-making and linkage. The smart subway of Line 15 covers various business areas and runs through the entire life cycle of the subway, embodying the concepts of smart construction, smart operation, and smart maintenance. Editor/Peng Xue