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A reporter from the China Daily Beijing learned on December 24 from China National Railway Group Co., Ltd. (hereinafter China Railway Group) that on December 24, after the technological transformation, the Chengdu-Chongqing high-speed railway it will meet standards and increase speed and quality. Various independent intellectual property rights The achievements of railway scientific and technological innovation have been put into practice, and the operation of high-speed railway transit between Chengdu and Chongqing has been carried out in one hour, which makes it easier and faster for passengers along the line provide a strong transport guarantee for the construction of the economic circle of two cities in the Chengdu-Chongqing region.
According to the person in charge of the relevant department of the National Railway Group, the Chengdu-Chongqing high-speed rail is an important part of the “eight vertical and eight horizontal high-speed rail channels” along the river in China. It is the main skeleton of the intercity railway network in the Chengdu-Chongqing area, with a total length of 299.8. Kilometres. Since its completion in December 2015, it has been operating at a speed of 300 kilometers per hour, and the passenger flow has shown a fast-growing trend. In 2019, 31.85 million passengers were shipped, an increase of 15.07. million compared to 2016, an increase of 89.8%.
According to the person in charge, in order to implement the Party Central Committee’s strategic plan for the construction of the Chengdu-Chongqing two-city economic circle and better meet the travel needs of people along the route, the National Railway Group has taken full advantage of China’s high-speed railway scientific and technological innovation achievements and practical operational experience of China to actively organize the development of Chengdu-Chongqing high-speed railway has improved speed and quality. Various technologies have made new advances. After the transformation, with the exception of the two axes, the intermediate line will operate at a maximum speed of 350 kilometers per hour.
One is the innovation and upgrading of high-speed rail infrastructure equipment technology. Projects have been carried out to reinforce and transform tracks, signals, catenary, traction feeding (transformation), communication and information. The TQI value of participation (road irregularity quality index) of the line has reached the advanced level of the domestic line of the same level; the signaling software upgrade test was carried out and the train control system data software was optimized and adjusted to meet the EMU 5-minute tracking operating conditions; the suspension of the catenary was replaced in the entire line Almost 80,000 pieces. After the transformation, the technical equipment level fully meets the conditions for high-quality and safe operation at a maximum speed of 350 kilometers per hour.
The second is the use of maintenance technology for EMUs to achieve innovation and improvement. Put to use 8 sets of the latest EMU CR400AF Fuxing (short form), equipped with the latest inspection and maintenance equipment. Developed and put into use the EMU Failure Prediction and Health Management System (PHM), which has the functions of early warning and maintenance decision making, and gradually realized the transformation from planned preventive maintenance to maintenance of digital precision, and further improved EMU’s safety assurance level.
The third is the innovation and improvement of high-speed train disaster prevention technology. An earthquake early warning and monitoring system project has been built along the line, and the foreign body, wind and rain intrusion monitoring subsystems are simultaneously connected to the central system, which can realize real-time monitoring and early warning of natural disasters and foreign body intrusion, and ensure the safe operation of high-speed trains.
Fourth, the high-speed train acceleration detection technology has achieved innovation and improvement. Extensive tests were carried out on 13 items, including road condition, road beds, bridges, tunnels, traction power supply, electromagnetic environment, and communication systems. Acceleration tests of the EMU were performed. The maximum test speed reached 385 kilometers per hour and the test mileage exceeded 40,000 kilometers. The indicators are excellent.
Fifth, e-ticket technology has achieved innovation and improvement. Utilize information technology such as big data and memory computing to innovate ticket purchasing services, launch two new ticket systems, including a metered ticket and a regular ticket, and travel in “reserve + direct brushing” mode , so that passengers can travel and drive at any time during the validity period. Seats can be reserved earlier and refunds can be made at any time if not activated, giving passengers a better ticket buying experience.
The person in charge introduced that China Railway Group arranged 87.5 pairs of moving wagons on the Chengdu-Chongqing high-speed train, optimized the transportation organization, increased the frequency of train operations, and averaged every 20 minutes between Chengdu and Chongqing. ; optimized passenger waiting, boarding procedures and transfers. Service, promote the integration of ticket verification and verification, realize the integration of multiple modes of transportation of high-speed rail, subway and aviation; upgrade customer service facilities and equipment, improve the station environment, pilot “silent carriages” and improve services for key passengers and business passengers. Further improve the quality of service; The operational services will carry out the transit of the product, the purchase of tickets, the transit and transit of the service.
The person in charge emphasized that the Chengdu-Chongqing area is the most densely populated, most concentrated and most densely urbanized industry in the west. The population and total economic volume of the urban agglomeration accounted for about 90% of the total of Sichuan and Chongqing, which is “significant growth in the national economy.” pole. “While the Chengdu-Chongqing high-speed railway lives up to the standard for increasing its speed and quality, the National Railway Group is accelerating the planning and construction of the Chengdu-Chongqing mid-line high-speed railway. Currently, the preliminary work of the project is proceeding smoothly. The continuous innovation and development of China’s railways will surely inject new impetus to the construction of the Chengdu-Chongqing two-city economic circle, the creation of an internal reform and a plateau opening, and promoting regional integration.
(Editor: Yan Yujie)
