As of the end of 2017, a total of 34 cities in China have opened urban rail transit and put into operation, opening 165 urban rail transit lines, with a length of 5,033 kilometers. No matter the development speed or construction scale of the urban rail system, it ranks first in the world.
However, compared with the mature and orderly railway network, the urban rail transit of China's cities and towns still faces many challenges.
"As China's opening of operating cities continues to increase, new operating mileage increases rapidly, and the scale of the network continues to expand, the pressures and challenges of safe operation of urban rail transit are also increasing. In management system mechanisms, regulatory standards systems, planning, construction and operation. There are many problems in terms of convergence and emergency response capabilities," said Liu Xiaoming, member of the party group and vice minister of the Ministry of Transport.
To this end, the General Office of the State Council recently issued the "Opinions on Safeguarding the Safe Operation of Urban Rail Transit" (hereinafter referred to as "Opinions"), with the goal of ensuring the safe operation of urban rail transit, improving the system and mechanism, improving the regulatory standards, and innovating the management system. Relevant policy initiatives have been proposed in terms of strengthening technical support, and urban rail transit safety has a top-level design.
Key equipment access threshold
For a long time, the subway entry threshold has been low, and there is no uniform standard that is often criticized.
On July 5, 2011, a escalator accident occurred on the escalator of the A station of the Beijing Metro Line 4 Zoo Station, causing dozens of casualties. At that time, the information disclosure was only one subway station in Xidan, and the number of escalator brands was as high as seven or eight.
The Chengdu Metro Line 5 under construction is the one-time subway line with the longest mileage (49 kilometers on the main line) and the most stations (41 stations).
“Because the construction is too fast, there is no uniform standard such as design, construction and bidding, except for the uniform acceptance criteria. Every time a new project is installed, the communication equipment is different, which not only increases the construction cost, but also gives the later dimension. The management caused the disadvantages." At the site of Chengdu Metro Line 5 project, Lu Yun, project manager of China Railway Construction Electrification Bureau, who participated in the construction of subway communication projects in several cities, said that in order to ensure the safety construction of the project and the maintenance of the latter, the project was innovatively used. Intelligent management methods such as intelligent library management system and engineering statistics system.
"In terms of facilities and equipment, there are different types, complicated brands, compatibility, systemicity, unstable system operation, interconnection between new lines and old lines, and obstacles in resource sharing, etc., for use, management and maintenance. Risk hazards come," said Hou Wenjun, general manager of the Shenzhen Metro Group Vehicle Company.
To this end, the "Opinions" proposed to develop technical conditions for the operation of key facilities and equipment, promote product stereotypes, establish quality disclosure and traceability mechanisms, and strengthen overall quality supervision. We will improve the dual prevention system for operational safety risk grading management and control and hidden danger investigation and management, and establish a third-party evaluation system for urban rail transit operation safety.
Security service requirements throughout the entire process
According to data from the Beijing Municipal Commission of Communications, the average daily passenger traffic of the rail transit network reached 10.30 million passengers, a year-on-year increase of 3.6%; the highest daily passenger traffic reached 12.9402 million passengers. In January 2018, the Beijing Metro Operation Company updated the destination current limit, and the normalized current limit station increased from 73 to 96, which means that the current limit station has reached 25%.
“The subway is generally below 15 meters underground, and the deepest is 70 meters. Once the underground space is determined, it is difficult to change. Therefore, the planning and design of the rail transit construction should first pay more attention to the advancement of the network planning. Secondly, the planning and design of the rail transit construction should pay attention to the design. The scientific nature of the standard, China's urban rail transit is developing rapidly, but the standards and management system are relatively backward." Yu Guangyao, vice president of the World Rail Transit Development Research Association and chairman of Shanghai Shentong Metro Group, said.
The surge in passenger flow has repeatedly broken through the scope of design, which has increased the difficulty of management of operational safety and brought inconvenience to passengers.
To this end, the "Opinions" require the establishment of the concept of "planning construction for operation and operation as passengers", and the safety and service requirements throughout the planning, construction and operation. Accurately grasp the development scale and development speed of urban rail transit, reasonably determine the standardization and construction time series, and conduct quantitative and orderly development. Facilities, equipment, venues, and other public safety related projects must be synchronized with urban rail transit projects, synchronized design, construction at the same time, simultaneous acceptance, and simultaneous use.
Incorporate into the government emergency management system
According to the relevant investigations conducted by the Ministry of Transport, some urban rail transit emergency drills have problems such as single mode, weak combat effectiveness, and insufficient public participation.
To this end, the "Opinions" propose that governments at or above the city level should incorporate urban rail transit emergency management into the government emergency management system, establish emergency response mechanisms, and clarify the division of responsibilities, working mechanisms and disposal requirements of relevant departments and units. . Strengthen the construction of emergency rescue forces and emergency training, increase the research and development of professional rescue equipment, and build a national-level urban rail transit emergency drill center. And encourage and support relevant parties to strengthen the research and development of professional rescue equipment. Strengthen the on-site disposal response and establish a working mechanism for coordination, rapid response, and scientific disposal of all parties concerned.
Redfir people's opportunity
In 2012, Sequoia won the bid for Ningbo Rail Transit Line 1 and became the supplier of porcelain-based aluminum plate for the whole control material of Line 1. It marked the official high-speed shuttle bus service for the construction of rail transit, and it blew the subway, high-speed rail and airport. The horn of large public construction projects such as tunnels and cultural centers. After that, Sequoia's footprints throughout the country, Suzhou Metro, Fuzhou Metro, Hangzhou Metro, Ningbo Metro, Qingdao Metro, Nanjing Metro, Nanchang Metro, Hefei Metro, Urumqi Metro and other key projects, are Sequoia and this era Witness. Sequoia Group actively responded to the national “Belt and Road” initiative, using Ningbo as the first-mover advantage of the “Made in China 2025” pilot demonstration city, providing green and environmental decoration solutions for urban rail transit, and contributing redfir power to the beauty of urban art.