China's high-speed rail continues to run on the road of independent innovation

  ◎Our reporter Guo Guozhong Jiaoyang correspondent Wang Qinlin Shu Jingya

  On January 19, General Secretary Xi Jinping took the Beijing-Zhangjiakou high-speed rail to Zhangjiakou competition area to inspect work and pointed out that a successful example of my country's independent innovation is the high-speed rail. From scratch, from introduction, digestion, absorption and innovation to independent innovation, it has now led the way. world.

We must sum up our experience and continue our efforts to strive for greater development during the "14th Five-Year Plan" period.

  So, my country's high-speed rail has gone through several important development stages, and which key technologies have made major breakthroughs?

During the "14th Five-Year Plan" period, what aspects should the high-speed rail use to make further innovations and achieve greater development?

On January 21, a reporter from Science and Technology Daily visited relevant people in the high-speed rail field.

  my country's line construction started more than 50 years late

  In the eyes of high-speed rail people, my country's railways have undergone tremendous changes in the past century, and the rapid development of high-speed rail has opened a new journey to become a modern railway power.

This magnificent development process embodies the dreams and struggles of generations of railway people, and it also witnesses the century-old rejuvenation of the Chinese nation.

  Wang Hongnian, Secretary of the Party Committee and Chairman of CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co., Ltd. (hereinafter referred to as CRRC Qishuyan Institute) told reporters that my country's railway development can be divided into a budding period, a budding period, a growth period, and a transition period.

The first railway that appeared was the Wusong-Shanghai railway opened to traffic in 1876. The first locomotive appeared in 1881. The completely self-built railway was the Beijing-Zhangjiakou Railway, which was built in 1905. It was also the first railway that did not use foreign funds and Personnel, a trunk railway constructed and put into operation by China itself.

Therefore, it can be said that my country's railway, whether it is equipment or line construction, is more than 50 years later than that of Britain and the United States and other countries.

  How to catch up?

Wang Wenhu, general manager of CRRC Qishuyan Research Institute, said that after the 1990s, my country’s railway development has clearly defined two major focuses. One is to accelerate product upgrades, develop locomotives and vehicles that meet the needs of speed-up, high-speed, and heavy-duty transportation, and develop inter-city rapid New products such as trains; second, production and manufacturing "upper quality, level, and high-end", all of which put forward higher requirements for material technology and key component manufacturing.

  From introduction, digestion and absorption to independent innovation

  High-speed intelligence, China's high-speed rail innovation road continues to run.

  In fact, until 2004, China did not have an inch of high-speed rail. However, after nearly 16 years of trials and hardships, from introduction, digestion, absorption and innovation to independent innovation, China's high-speed rail has now led the world.

  At the 2021 China National Railway Group Co., Ltd. ("China Railway Group") work conference, Party Secretary and General Manager Lu Dongfu revealed that in 2020, China Railway's "13th Five-Year Plan" will be successfully concluded.

The "four vertical and four horizontal" high-speed rail network was completed ahead of schedule, and the "eight vertical and eight horizontal" high-speed rail network was encrypted and formed.

The overall technical level of the railway has entered the world's advanced ranks, and the high-speed, plateau, alpine, and heavy-haul railway technology has reached the world's leading level. The intelligent high-speed rail technology has been promoted to achieve full autonomy, and the Fuxing high-speed train has taken a key step from catching up to leading.

  The latest data shows that the current coverage of China's high-speed rail network in cities with a population of more than 500,000 is close to 90%, Hong Kong has entered the national high-speed rail network, and all provincial capital cities except Lhasa have high-speed rail.

  So, during the "14th Five-Year Plan" period, what innovations will China's high-speed rail have?

  In the first year of the "14th Five-Year Plan", China Railway Group announced the launch of the Fuxing "CR450 Science and Technology Innovation Project" to develop safer, more environmentally friendly, energy-saving, and smarter new Fuxing products.

  As a major achievement of China's railway scientific and technological innovation, the Fuxing train currently has three speed grades of 350, 250 and 160.

The organization and implementation of the development of CR450 this time will promote the demonstration of key technical indicators and the compilation of the top-level indicator system, and carry out key technical research on system integration, wheel and axle drive, brake control, vibration and noise reduction.

  The train control system is the brain and nerve of high-speed rail operation.

Mo Zhisong, director of the Communications and Signaling Department of the Ministry of Industry and Electricity of the National Railway Group, said that the National Railway Group is relying on the Qinghai-Tibet Railway to organize the development of a new train control system.

  "The new intelligent train control system will use Beidou satellite navigation technology, 5G communication technology, etc. to form an integrated air-space-ground train control system. Compared with traditional train control technology, it will realize trackside electronic equipment from more to less, from existence to nothing. Transformation is a milestone technological innovation in the field of train control technology." Mo Zhisong said.

  In the future, smart technology will be more and more used in the field of high-speed rail

  In addition to EMUs, future intelligent technology will be deepened to the entire process of high-speed rail construction, maintenance, and safety assurance.

"The construction and operation of intelligent railways represented by the Jingzhang, Jingxiong, and Haoji Railway will also bring about the comprehensive integration and application of modern technologies and new infrastructure such as cloud computing, Internet of Things, big data, artificial intelligence, 5G, etc., to further improve The key technological level of railways.” said Jia Guangzhi, deputy director of the Information Institute of China Academy of Railway Sciences Group Co., Ltd.

  According to the 2021 National Railway Group Work Conference, the National Railway Group has begun to deploy new railway infrastructure, launching the railway 5G private network technology system and key technology research, China's railway main data center is operating smoothly, and it is increasing the promotion of artificial intelligence and the Internet of Things. And other new technologies in the railway field.

  A reporter from the Science and Technology Daily also learned that according to the relevant national work arrangements, the National Railway Administration is organizing the research and preparation of the "14th Five-Year Plan for Railway Development".

"It will promote major scientific and technological research and development such as key technologies for 400-kilometer-level high-speed railways and 600-kilometer-level high-speed magnetic levitation systems, breakthrough key core technologies, enhance enterprise innovation capabilities, and improve technological innovation systems and mechanisms." said Yan Hexiang, chief engineer of the National Railway Administration. The "14th Five-Year" Railway Development Plan will also improve the construction of the "eight vertical and eight horizontal" high-speed railway network, vigorously promote intercity railways, accelerate the development of urban railways, improve the layout of the road network, and implement the Sichuan-Tibet railway and the new western land-sea corridor. Approval of major engineering projects.

  According to the special meeting on the construction of intercity and urban (suburban) railways held by the National Development and Reform Commission, “It is planned to include the Beijing-Tianjin-Hebei, Yangtze River Delta, and Guangdong-Hong Kong-Macao intercity and urban (suburban) railways as major projects in the '10 During the “Fourth Five-Year Plan”, the three major regions plan to start construction of approximately 10,000 kilometers of intercity and urban (suburban) railways during the “Fourteenth Five-Year Plan” period.”