Chengdu–Guiyang High-Speed Railway

Chengdu–Guiyang High-Speed Railway
Name	Chengdu–Guiyang High-Speed Railway
Native name	成都–贵阳高速铁路
Locale	Sichuan, Guizhou
Start	Chengdu
End	Guiyang
Status	Operational
Owner	China Railway
Operator	China Railway Chengdu Group
Line length	648 km
Electrification	50 Hz 25 kV AC
Speed	250–350 km/h

Chengdu–Guiyang High-Speed Railway is a high-speed rail link connecting Chengdu and Guiyang across southwestern China. The line integrates sections of national corridors, linking the Belt and Road Initiative transport network with the Western Development strategy and connecting with nodes such as Chongqing, Kunming, and Changsha. It is operated by China Railway Chengdu Group and forms part of the national high-speed grid that includes the Beijing–Guangzhou high-speed railway, Shanghai–Kunming high-speed railway, and Xi'an–Chengdu high-speed railway.

Overview

The railway was planned under the National Development and Reform Commission and built as part of China's expansion of the High-speed rail in China network, alongside projects like the Beijing–Shanghai high-speed railway and Zhengzhou–Xi'an high-speed railway. Designed for speeds up to 350 km/h on key sections, it reduces travel times between Sichuan Basin and Guizhou Plateau cities and integrates with hubs such as Chengdu East railway station and Guiyang North railway station. Key stakeholders included China Railway Corporation, provincial governments of Sichuan and Guizhou, and construction conglomerates such as China Railway Construction Corporation and China Railway Group Limited.

Route and Stations

The corridor traverses varied terrain from the Chengdu Plain through mountainous areas near Mianyang, Leshan, and the Daba Mountains before entering Guizhou via areas near Zunyi and terminating at Guiyang. Major stations include Chengdu East railway station, Mianyang Nan, Leshan, Ziyang, Neijiang North, Yibin, Anshun West, Zunyi South, and Guiyang North railway station. Interchanges link to networks such as Chongqing North railway station, Kunming South railway station, Shanghai Hongqiao railway station, and Guangzhou South railway station. The line interfaces with the Chengdu–Chongqing intercity railway, Chengdu–Kunming high-speed railway, and the Guiyang–Guangzhou high-speed railway enabling connections to hubs like Wuhan, Xi'an North railway station, Nanning East, Hangzhou East railway station, Shenzhen North railway station, and Beijing West railway station.

Construction and Engineering

Construction drew on techniques used on projects such as the Qinling Tunnel and the Dali–Ruili railway and involved firms like China Communications Construction Company and China National Nuclear Corporation subsidiaries for geotechnical work. Engineering challenges included karst topography in Guizhou Plateau regions and seismic considerations informed by studies from institutions such as the Chinese Academy of Sciences and Tsinghua University. Major structures include long-span bridges and tunnels, leveraging technology from projects like the Hangzhou Bay Bridge and the Shiziyang Tunnel. Signaling and communications use systems comparable to those on the Beijing–Zhangjiakou high-speed railway, integrating CTCS standards and rolling stock such as the CRH380A and Fuxing EMU families supplied by manufacturers like CRRC.

Operations and Services

Timetables coordinate with national services on lines including the Guangxi–Guizhou high-speed corridor and the Shanghai–Chongqing high-speed connection, with through-trains operating to Kunming, Guangzhou, Beijing, Shanghai, and Hangzhou. Train categories mirror those on other Chinese high-speed services such as the G-series and D-series trains. Passenger amenities follow standards seen at China Railway stations like Chengdu East, with ticketing integration via 12306 and mobile platforms like WeChat and Alipay. Freight planning and logistics studies reference corridors such as the Chongqing–Xi'an railway and intermodal hubs like Chengdu Tianfu International Airport and Guiyang Longdongbao International Airport for passenger-to-air connectivity.

Economic and Regional Impact

The line supports regional policies including the Western Development strategy and the Guizhou Big Data Pilot Zone, enhancing access to innovation centers like Chengdu Hi-Tech Zone and industrial parks in Zunyi. It catalyzes tourism flows to attractions such as Giant Panda Breeding Research Base, Jiuzhaigou Valley, Huangguoshu Waterfall, and Fenghuang Ancient Town, while enabling supply chain efficiencies for industries in Chengdu Hi-Tech Industrial Development Zone and Gui'an New Area. Urban nodes along the route, including Neijiang, Yibin, and Anshun, have seen integration with municipal plans informed by research from Peking University and Renmin University of China.

Environmental and Safety Considerations

Environmental assessments referenced projects like the South–North Water Transfer Project and conservation frameworks from the Ministry of Ecology and Environment and China Green Building Council. Mitigation addressed karst drainage, habitat fragmentation near Wuling Mountain National Nature Reserve, and water resources impacting the Yangtze River and tributary basins. Seismic resilience drew on standards from the China Earthquake Administration and post-construction monitoring protocols aligned with practices used on the Wenchuan earthquake reconstruction. Safety management integrates systems modeled after the China Railway Corporation national safety protocols and emergency response coordination with local agencies such as municipal bureaus in Chengdu and Guiyang.

Category:High-speed rail in China