Beijing Underground Cross City Railway is a short High-speed rail line connection in the Chinese capital city of Beijing. It connects the important transportation hubs Beijing Railway Station and Beijing West Railway Station. It also connects southern and western areas with north-east China. The railway has a length span of 9.156 kilometers, and has been officially operational since March 20, 2015.
In the early 1980's a plan was proposed to connect Beijing Railway Station to Beijing West Railway Station via a conventional railway. This was an important part of the overall planning of Beijing West Railway Station's renovation, originally announced as part of the "Eighth Five-Year Plan". However, due to technical difficulties and other factors, this project did not initiate.
December 24, 2005: A proposal was made with the aim of completing the construction within 2.5 years, in time for the 2008 Beijing Olympic Games. However in 2007, the project was delayed and couldn't be completed before the Beijing Olympics.
July 2013: The construction project was successfully completed
December 19, 2014: The line passed static inspection.
December 30, 2014: Test trains tested on the tracks.
March 20, 2015: Beijing Underground Cross City Railway officially opened with the first trains running from Shijiazhuang to Chengde (K7742/7743, K7744/7741) train.
May 15, 2016: Train Z621/622, Z721/722, and Z921/Z922 Beijing–Lhasa train including cars from Shenyang North Railway Station/Changchun Railway Station/Harbin Railway Station to Beijing West Railway Station, started to use the tunnel to travel from Beijing–Guangzhou Railway to Beijing–Harbin Railway.
Construction Unit: Beijing Railway Bureau
Construction Unit: China Railway Liu Ju Group Limited, China Railway 16 Bureau Group Co., Ltd., China Railway Bureau Group, a company tunnel
Designer: Third Railway Survey and Design Institute
Supervisor: Academy of Railway Sciences Engineering Construction Supervision Department, China Railway Engineering Consulting Corporation, Beijing Railway Construction Engineering Co. Ltd.
Main Technical Standards
Railroad Grade: I level
Number of main lines: Double
Minimum curve radius: General area 800 meters, 550 meters in difficult sections
Limiting gradient: 16%
Effective train length: 650 m
Type of traction: Electric traction
Rolling stock: CRH3F
Block Type: Automatic Block
