Beijing underground cross-city railway
Underground railway line in Beijing, China
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The Beijing underground cross-city railway is a short railway connection in Beijing. It connects the important transportation hubs Beijing railway station and Beijing West railway station. For the most part it is underground, in a section known as the Qiansanmen Tunnel. The speed limit is 120 km/h.[1] It also connects lines from southern and western areas with lines from northeast China.[3] The railway has a length span of 9.156 km (5.689 mi), and has been officially operational since March 20, 2015.[4]
| Beijing underground cross-city railway | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The entrance of Qiansanmen Tunnel from Beijing railway station | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Overview | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Status | Operational | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Locale | Beijing | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Termini | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stations | 2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Service | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Type | Heavy rail | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Operator | China Railway Beijing Group | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Rolling stock | HXD3D, SS9, CRH6[a] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| History | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Opened | March 20, 2015 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Technical | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line length | 9.156 km (6 mi) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Minimum radius | 4500m | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Electrification | AC 25 kV 50 Hz with overhead catenary | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Operating speed | 120 km/h (maximum speed)[1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Maximum incline | 1.6% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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It is used by conventional railway lines such as K7752 from Shijiazhuang to Chengde via Beijing West railway station and Beijing railway station, as well as the commuter rail Sub-Central line of the Beijing Suburban Railway, which started in December 2017.[5][6]
History
- In the early 1980s 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 begin.
- 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.[3][7]
- However, in 2007, the project was delayed and couldn't be completed before the Beijing Olympics.
- July 2013: The construction project was completed.[8]
- December 19, 2014: The line passed static inspection.
- December 30, 2014: Test trains tested on the tracks.[9]
- March 20, 2015: Beijing underground cross-city railway officially opened with the first trains running from Shijiazhuang to Chengde (K7742/7743, K7744/7741).[10]
- May 15, 2016: Train Z621/622 and Z721/722 Beijing–Lhasa trains, and trains from Shenyang North railway station / Changchun railway station to Beijing West railway station, started to use the tunnel to travel from Beijing–Guangzhou Railway to Beijing–Harbin Railway.
- December 31, 2017: The commuter rail service in Beijing, the Sub-Central line of the Beijing Suburban Railway, started to use Beijing underground cross-city railway by CRH6A. The Sub-Central line runs from Beijing West railway station to Tongzhou railway station.[11]
- October 11, 2022: Trains G7812/7813, G7814/7811 (Chengde South - Handan East) and G7816/7817, G7818/7815 (Chengde South - Shijiazhuang) started to use the tunnel, linking Beijing-Harbin HSR and Beijing-Guangzhou HSR.
Construction
- 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
Notes
- CRH6 only used by the Sub-Central line of Beijing Suburban Railway, the commuter rail service in Beijing.