China’s high-speed railway refers to the high-speed railway built and used in China, which is an important type of transportation infrastructure in contemporary China
According to the “Code for Design of High-speed Railways” (TB10621-2014): China’s high-speed railways are passenger-dedicated railways with a design speed of more than 250 kilometers per hour and the initial operating speed of trains of more than 200 kilometers per hour. According to “Medium and Long-term Railway Network Planning (2016)”: China’s high-speed railway network is composed of all new lines with a design speed of more than 250 kilometers per hour and some existing railway lines with a design speed of more than 200 kilometers per hour after transformation.
By the end of 2019, the total operating mileage of China’s high-speed railways reached 35,000 kilometers, ranking first in the world
China’s high-speed rail achievements
On December 26, 2012, the world’s longest high-speed rail-Beijing-Guangzhou high-speed rail was officially opened to traffic
On December 26, 2014, the longest high-speed rail in the world, the Lanxin high-speed rail, was completed at one time.
On June 26, 2017, China’s standard EMU “Fuxing” EMU with completely independent intellectual property rights ran on the Zhenjiang section of the Beijing-Shanghai high-speed railway in Jiangsu.
On September 21, 2017, the world’s fastest commercial high-speed rail, the Beijing-Shanghai high-speed rail “Fuxing”, achieved a speed of 350 kilometers per hour.
China’s high-speed railways have various forms and rich types. According to the different status and service scope of high-speed railways in the road network, China’s high-speed railways can be divided into primary and secondary trunk lines (ie, eight vertical and eight horizontal main passages, regional connecting lines) and branch lines (tie lines, extension lines, intercity lines), etc. According to speed indicators, China’s high-speed rail can be divided into three levels: 250 kilometers per hour, 300 kilometers per hour, and 350 kilometers per hour. According to other distinctive features, it also subdivides intercity high-speed rail, mountain high-speed rail, joint-venture high-speed rail, and transnational high-speed rail.
China’s high-speed railway is a closed electrified railway, and an aerial contact network is set up to supply power for the trains; ballastless tracks and seamless steel tracks are often used, and some of them are ballasted tracks; the line realizes GSM-R network coverage and establishes a digital mobile communication system covering the entire road , Set up integrated video surveillance, emergency communications, dispatch communications and other systems, set up automatic block or mobile block system in the railway section; part of the line adopts the “ATO+CTCS2/3” new train operation control system; large-scale passing bridges instead of roads, bridges and tunnels Laying track lines in combination to achieve control of roadbed settlement, conservation of land resources and protection of the ecological environment, etc. In general, China’s high-speed railways can only operate high-speed EMU trains, but there are also some high-end passenger and freight railroads that run both regular-speed passenger cars and even freight trains.