China News Service, December 24. The reporter learned from China National Railway Group Co., Ltd. (hereinafter referred to as China Railway Group) that on December 24, after technological transformation, the Chengdu-Chongqing high-speed railway will meet the standards and increase the speed and quality. Many have completely independent intellectual property rights. The scientific and technological innovation achievements of the railway were put into application, and the high-speed rail transit operation between Chengdu and Chongqing was realized in one hour, and the travel of passengers along the line would be more convenient and quick. This will provide a strong transportation guarantee for the construction of the Chengdu-Chongqing double-city economic circle.
Chengdu-Chongqing has realized one-hour direct access to high-speed rail transit.
Photo by Yang Min
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 my country. It is the main skeleton of the intercity railway network in the Chengdu-Chongqing area, with a total length of 299.8. Kilometers.
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 rapid growth trend. In 2019, 31.85 million passengers were sent, an increase of 15.07 million compared with 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 dual-city economic circle and better meet the travel needs of the people along the route, the National Railway Group has made full use of my country's high-speed rail scientific and technological innovation achievements and operational practical experience to actively organize the development The Chengdu-Chongqing high-speed railway has achieved speed and quality improvement. A number of technologies have achieved new breakthroughs. After transformation, except for the two hubs, the intermediate line will operate at a maximum speed of 350 kilometers per hour.
Chengdu-Chongqing has realized one-hour direct access to high-speed rail transit.
Photo by Yang Min
One is the innovation and upgrading of high-speed rail infrastructure equipment technology.
Reinforcement and transformation of tracks, signals, catenary, traction power supply (transformation), communications, and information projects have been carried out.
The turnout TQI value (track irregularity quality index) of the line has reached the advanced level of the domestic line of the same level; the signal software upgrade test was carried out, and the data software of the train control system was optimized and adjusted to meet the 5-minute tracking operation conditions of the EMU; the catenary wire was replaced on the whole line Nearly 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 into use 8 sets of the latest CR400AF Fuxing EMU (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, gradually realized the transformation from planned preventive maintenance to digital precision maintenance, and further improved the level of EMU safety assurance.
The third is the innovation and improvement of high-speed rail disaster prevention technology.
The earthquake early warning and monitoring system project has been built across the line, and the wind, rain and foreign body intrusion monitoring subsystems are simultaneously connected to the central system, which can perform real-time monitoring and early warning of natural disasters and foreign body intrusion to ensure the safe operation of high-speed trains.
Fourth, the detection technology for high-speed rail speed-up has achieved innovation and improvement.
Comprehensive testing of 13 items including track status, roadbeds, bridges, tunnels, traction power supply, electromagnetic environment, and communication systems were carried out. EMU speed-up tests were carried out. 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.
Use information technology such as big data and memory computing to innovate ticket purchase services, launch two new ticket systems, including metered tickets and regular tickets, and ride in the “reservation + direct brush” mode, so that passengers can travel and drive at any time during the validity period Seats can be reserved before, and refunds can be made at any time if it is not activated, providing passengers with a better ticket buying experience.
The person in charge introduced that China Railway Group arranged 87.5 pairs of mobile cars on the Chengdu-Chongqing high-speed rail, optimized the transportation organization, increased the frequency of trains, and averaged every 20 minutes between Chengdu and Chongqing; optimized passenger waiting, boarding procedures, and transfers. Service, promote the integration of verification and ticket checking, realize the integration of multiple transportation modes 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 service quality; operational services will realize product transit, ticket purchase, ride transit, and service transit.
The person in charge emphasized that the Chengdu-Chongqing area is the most densely populated, most concentrated industry, and most densely urbanized area 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 an "important growth in the national economy." pole".
While the Chengdu-Chongqing high-speed railway is up to the standard to increase its speed and quality, the National Railway Group is accelerating the planning and construction of the Chengdu-Chongqing mid-line high-speed railway. The preliminary work of the project is currently progressing smoothly.
The continuous innovation and development of China's railways will surely inject new momentum into the construction of the Chengdu-Chongqing double-city economic circle, the creation of an inland reform and opening up plateau, and the promotion of regional integration.