On October 19, the right-line tunnel section of Chongqing Rail Transit Line 15 Phase II construction project, spanning from Chongqing City Management Vocational College Station to Chongqing University of Science and Technology Station, was successfully completed. This marks the full connection of the entire Rapid Rail Line 15, laying a solid foundation for subsequent completion and operation.
The completed right-line tunnel section spans approximately 3,412 meters, primarily passing through sandstone and sandy mudstone formations. During construction, the tunnel boring machine needed to continuously pass beneath dense high-rise building foundations and closely bypass multiple important structures and municipal pipelines. The construction faced particularly high risks when crossing under an existing operational 500kV ultra-high voltage power transmission line. The project team utilized a large-diameter earth pressure balance shield machine with a diameter of 8,780 millimeters, achieving precise completion through real-time geological monitoring and careful adjustment of tunneling parameters.
As the first rapid rail line in Chongqing’s central urban area, Line 15 runs from Zengjia Station in the west to Liangjiang Film Studio Station in the east, with a total length of approximately 72 kilometers. The line features 25 stations and has a maximum operating speed of 140 kilometers per hour.
The Phase I project spans about 39 kilometers with 14 stations. On September 5, the Phase I project completed its final rail connection, achieving full track connectivity. The project has now entered the electromechanical installation and system debugging phase, with official operation expected by the end of June next year. The Phase II project primarily serves to rapidly connect the Science City, University Town, and other areas with the central valley across different urban clusters.
Upon full completion, Rail Transit Line 15 will rapidly connect three major valleys, linking transportation hubs including Chongqing Jiangbei International Airport Terminal T3 and Fusheng High-Speed Rail Station. This will further optimize the city’s functional layout and accelerate the integration process of the main urban area.
Chongqing City Management Vocational College Station
Chongqing City Management Vocational College Station is a metro station on Line 5 of the Chongqing Rail Transit system in China. It primarily serves the vocational college of the same name, providing convenient transport for students and residents in the Bishan District area. The station was opened with the first phase of Line 5 in 2018, supporting the area’s urban development.
Chongqing University of Science and Technology Station
Chongqing University of Science and Technology Station is a metro station on Line 1 of the Chongqing Rail Transit system in China. It primarily serves the students and staff of the university it is named after, which has a history dating back to its founding in 1951. The station provides a vital transportation link for the academic community and the surrounding area.
Zengjia Station
Zengjia Station is a historic railway station located in Chongqing, China, which opened in 1952 as part of the Chengdu-Chongqing Railway. It served as a key transportation hub for decades but ceased passenger operations in the early 2000s. Today, it stands as a preserved cultural landmark reflecting China’s industrial and railway heritage.
Liangjiang Film Studio Station
Liangjiang Film Studio Station is a metro station in Chongqing, China, serving the city’s light rail system. It is named for its proximity to the Liangjiang International Film and Television City, a major studio complex built to support the local film and television industry. The station primarily facilitates access to this cultural and entertainment hub.
Science City
Science City is a major science center and popular tourist attraction located in Kolkata, India. It was developed by the National Council of Science Museums and opened in 1997 with the mission of popularizing science. It features numerous interactive exhibits, a space theater, and a dedicated maritime center.
University Town
University Town (or “UniverCity”) is a modern residential and commercial district located adjacent to Simon Fraser University atop Burnaby Mountain in British Columbia, Canada. It was developed starting in the late 1990s as a sustainable community to house students, faculty, and the general public, transforming the area around the university into a vibrant, walkable neighbourhood. Its history is intrinsically linked to the growth of the university, evolving from a primarily academic campus into a complete community.
Chongqing Jiangbei International Airport Terminal T3
Chongqing Jiangbei International Airport Terminal 3 is one of the main passenger terminals at one of China’s busiest airports. It was officially opened in 2017 to accommodate the airport’s rapid growth and significantly increase its capacity for both domestic and international flights. The modern terminal is a key aviation hub for western China.
Fusheng High-Speed Rail Station
Fusheng High-Speed Rail Station is a modern railway station located in Fusheng Town, China, serving as a stop on the high-speed rail network to improve regional connectivity. It was constructed as part of China’s national infrastructure expansion to link smaller towns and cities with major urban centers, facilitating faster travel and economic development. The station exemplifies the country’s efforts to enhance transportation efficiency and support regional growth through advanced rail technology.
