The trial operation was successful on February 9, 2009, and it was officially put into operation on the 26th. The maximum running speed is 394 miles per hour, which can be reached in 3 hours from Wuhan to Guangzhou. The travel time from Wuhan to Guangzhou has been shortened from 1 1 hour to about 3 hours, and it only takes 1 hour for Wuhan to Changsha and 2 hours for Changsha to Guangzhou. Wuhan-Guangzhou high-speed railway has become the fastest and densest high-speed railway in the world. It is also the first high-speed railway with a speed of 350 kilometers per hour in China.
Wuhan-Guangzhou high-speed railway is called Beijing-Guangzhou high-speed railway and Beijing-Shanghai high-speed railway, Beijing-Kowloon high-speed railway, Wuhan-Hangzhou high-speed railway, Han Shi high-speed railway, Wuqing high-speed railway, Wugui high-speed railway, Wuxia high-speed railway, Jiang Yan high-speed railway, Wujiu high-speed railway and Xiwu high-speed railway, which constitute a dense high-speed railway network in the east and west of China. Improve the radial, large-capacity and high-standard passage from Wuhan to the surrounding central cities, and promote the formation of the "meter" shape of Wuhan high-speed rail network.
Focus on promoting high-speed rail construction in the direction of 10, such as Wuhan to Shiyan Xi 'an, Wuhan to Jinan Qingdao, Wuhan to Zhangjiajie Guiyang, Wuhan to Huanggang Hangzhou, Wuhan to Nanchang Fuzhou, Wuhan to Nanjing Shanghai, Wuhan to Chongqing Chengdu, Wuhan to Changsha Nanning, Wuhan to Changsha Guangzhou, and Wuhan to Zhengzhou Beijing.
High speed railway line
The shortest running time from Wuhan to Guangzhou is shortened to 3 hours 16 minutes; From Guangzhou to Changsha, the shortest time is 2 hours; The shortest time from Changsha to Wuhan 1 hour.
Wuhan-Guangzhou Passenger Dedicated Line starts from Wuhan Station in Wuhan, passes through Xianning, Chibi, Yueyang, Changsha, Zhuzhou, Hengshan, Hengyang, Leiyang, Chenzhou, Lechang, Shaoguan, Yingde, Qingyuan and Huadu, and reaches Guangzhou South Station. The design speed of infrastructure is 350 km/h, and the maximum running speed is 394.2 km/h. ..
The purpose of building this passenger dedicated line is to alleviate the huge passenger pressure on the Wuhan-Guangzhou section of the Beijing-Guangzhou railway. The time from Wuhan to Guangzhou is shortened from 1 1 hour to about 3 hours, and the time from Changsha to Guangzhou is shortened from 8 hours to 2 hours.
There are two major problems of Beijing-Guangzhou railway, namely, capacity saturation and passenger-cargo conflict, which are the two major reasons for the construction of Wuhan-Guangzhou passenger dedicated line.
Line parameters
Name: Wuhan-Guangzhou Passenger Dedicated Line
Nickname: Wuhan-Guangzhou high-speed railway
Direction: North and South
Mileage:1068.8km.
Main line length: 989 kilometers
Investment estimate:116.6 billion yuan.
Speed target value: 350 km/h
Line Grade: Passenger Dedicated Line
Line type: double-track electrification, ballastless track, maximum gradient of jointless track: 20‰
Radius of curvature: 7000m minimum.
Line spacing: 5 meters
Effective length of arrival and departure line: 650 meters
Model: CRH2C, CRH3, CRH380A, CRH380B, etc.
Orbit technology
Ballastless track is adopted in Wuhan-Guangzhou Passenger Dedicated Line, which is an advanced track technology in the world today. Its sleepers are made of concrete, and the subgrade does not need gravel. Rails and sleepers are directly laid on the concrete pavement, which reduces maintenance, prevents dust and beautifies the environment, and can adapt to high-speed trains with a speed of more than 200 kilometers per hour.
Besides China, both Japanese and German have their own orbital technologies.
Seamless track
The Wuhan-Guangzhou Passenger Dedicated Line is using super-long rails instead of ordinary 25m rails. Because the volume of steel is greatly affected by temperature, which is called thermal expansion and cold contraction, a 25-meter rail is generally used, leaving some gaps at the joint. This causes the train to bump due to rail joints during operation. Wuhan-Guangzhou Passenger Dedicated Line is a fast passenger dedicated line with an average speed of 260 kilometers per hour. When the train passes by, even a bump or gap of 0.5 cm will cause great danger. Therefore, in the design of Wuhan-Guangzhou Passenger Dedicated Line, the ultra-long seamless rail is used for construction at a suitable temperature (for example, 17~25 degrees Celsius in Changsha), so as to avoid reducing the influence of temperature on the rail as much as possible, and a concrete pad for adjusting the rail length is set under the rail to ensure that the joint change of the ultra-long rail is not more than 0. 1 cm, thus ensuring the safety of trains and tracks.
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