High-speed railway: "Chinese speed" leads the world
37,900 kilometers
As of the end of 2020, my country's high-speed railway operating mileage reached 37,900 kilometers, nearly doubled from 19,800 kilometers at the end of 2015, and ranked first in the world. More than 70% of the main framework of "eight verticals and eight horizontals" has been built.
◎Reporter Jiao Yang
In early summer, the newly built Guangzhou Baiyun Station, 2227 engineering piles have been poured.
Guangzhou Baiyun Station is one of the main passenger stations in the layout of the "five main and three auxiliary" passenger stations in the planning of the Guangzhou railway hub.
The yard scale is 11 stations and 24 lines, with ordinary rail as the main line, high-speed rail and intercity as the supplement, and six subway lines under it.
Walking into the construction site of Guangzhou Baiyun Station, there are few workers, and many processes have been handed over to robots.
"Baiyun Station is the country's first large-scale application of intelligent robots. 18 types of intelligent robots are used in the construction, which are used in civil engineering, electromechanical, decoration and other professional fields." China Railway Construction Engineering Group Guangzhou Baiyun Station Project Informationization The person in charge Lin Zunhu said.
The new concept of "green, smart, safe, and humanistic" has been fully integrated into the construction process of China's high-speed rail, and new technologies continue to lead new developments.
As of the end of 2020, my country's high-speed railway operating mileage reached 37,900 kilometers, nearly doubled from 19,800 kilometers at the end of 2015, and ranked first in the world. More than 70% of the main framework of "eight verticals and eight horizontals" has been built.
High-speed rail network covers 94.7% of cities with a population of more than one million
Since June 3, the newly built Mianlu High-speed Railway Inner (River) Zi (Gong) Lu (Zhou) Section has entered the trial operation stage, which is one step closer to the official opening of operation.
In the Zigong Substation, the first intelligent inspection robot is being put into trial operation.
"This is the first time in the industry that a self-developed auxiliary monitoring system (robot) for traction substations has been adopted." said Cheng Zhongqiang, secretary of the Party Working Committee of the Southern Sichuan Project Department of the Third Company of China Railway Electrification Bureau.
A reporter from the Science and Technology Daily noted that the intelligent inspection robot is 1.12 meters high, 0.66 meters wide, and 0.86 meters long. It can set its own route to achieve autonomous patrols and use ultrasonic radar to achieve 360-degree obstacle avoidance and fall prevention functions.
The length of the Mianlu High-speed Railway is about 130 kilometers, with a design speed of 250 kilometers per hour.
It is connected to the Chengdu-Chongqing intercity in the north and the Chongqing-Kunming high-speed rail in the south. It is an important part of the intercity railway network in the Chengdu-Chongqing Economic Zone, and it is also one of the rapid passenger transport channels for the southern Sichuan urban agglomeration.
After opening to traffic, Zigong City and Luzhou City will enter the "Era of High Speed Trains". Neijiang, Zigong, and Luzhou will form a half-hour economic circle, and Chengdu and Chongqing will form a 1-hour traffic circle.
Following the Yangtze River Delta, the Guangdong-Hong Kong-Macao Greater Bay Area and the Beijing-Tianjin-Hebei region on the track, the Chengdu-Chongqing urban agglomeration on the track is about to emerge.
More than four months ago, the Xuzhou-Lian (Yungang) high-speed rail with a total length of about 180 kilometers and a design speed of 350 kilometers per hour opened to traffic.
"So far, the longest horizontal passage of China's'eight vertical and eight horizontal' high-speed railway network-the 3,422-kilometer high-speed railway from Lianyungang to Urumqi, will provide strong support for the development of the new Eurasian Continental Bridge Economic Corridor." China National Railway Group The relevant person in charge of the company (hereinafter referred to as China Railway Group) disclosed.
Up to now, there have been national and regional central cities including Beijing, Shanghai, Wuhan, Zhengzhou, etc., and high-speed lines have been built with the "eight vertical and eight horizontal" main corridors as the framework, regional connection lines of different speed grades, and intercity railway supplements. The railway network realizes a 1-3 hour traffic circle between adjacent large and medium-sized cities, and a 0.5-2 hour traffic circle within an urban agglomeration.
my country has become the country with the longest high-speed rail operating mileage, the largest scale under construction, the largest number of high-speed trains in the world, the highest commercial operation speed, the most complete high-speed rail technology system, and the richest operating scenarios and management experience in the world.
The rapid development of China's high-speed railways is changing the way Chinese people travel.
According to the latest statistics from China National Railway Group, the national high-speed rail network has covered 94.7% of cities with a population of more than 1 million.
Commercial operation speed and construction standards hit a world record
The China Railway Economic Planning and Research Institute recently announced that the new Nantong-Ningbo (Tongsu-jiayong) high-speed railway project will start station design solicitation, which means that the feasibility study of this cross-sea high-speed railway has entered the decision-making process.
The Tongsu-Jiaong-Ningbo Railway is an important part of the "eight vertical and eight horizontal" main skeletons of the national high-speed railway network-an important part of the coastal railway passenger transport channel.
The most challenging aspect of this railway is the Tongsu-Jiayong line across the Hangzhou Bay Bridge.
The design route diagram shows that this sea-crossing bridge is basically parallel to the Hangzhou Bay Highway Bridge. The sea area is about 29.2 kilometers long. The bridge includes three navigation bridges in the north, middle and south. After the completion of the bridge, it will be the longest and construction standard in the world. The design and construction of the tallest cross-sea high-speed railway bridge will set many world records.
"The world's first high-speed rail sea-crossing bridge with strong tide bays, ultra-low water resistivity, and fully embedded caps; the main span of the North Channel Bridge is 450 meters, and the concrete box-steel truss composite beam cable-stayed bridge is used and laid Ballastless track, the first use in the construction of high-speed railways in the world; the sea approach bridge adopts prestressed concrete continuous beams with a main span of 80 meters, with a maximum joint length of 3,080 meters, and its ultra-long joint, large-span, curved continuous beam seamless track Set a world record.” Zhang Jian, chief engineer of the Tongsu-Jiaong Railway Project of China Railway Design Group Co., Ltd., said that these new records are milestones for the world's railway bridges and even bridge engineering.
On July 1, 2020, my country’s independent design and construction of the world’s first Shanghai-Sutong Yangtze River Highway and Railway Bridge with a kilometer-level main span was completed. It was opened and operated simultaneously with the Shanghai-Sutong Railway, marking my country’s success in conquering a kilometer-level ultra-large span. Bridge technology.
On December 27, 2020, the Beijing-Xiongan New District intercity railway was completed, and Xiong’an Station was put into use simultaneously.
The Beijing-Xiong Intercity has a total length of 106 kilometers and a design speed of 350 kilometers per hour. It is known as the benchmark and model of China's high-speed rail construction in the new era.
"This high-speed railway is also the first full-line, full-professional, and full-process digital twin railway that uses BIM (Building Information Modeling) technology to achieve virtual construction in the construction of the national railway." said Yang Bin, commander of the Beijing-Xiong Intercity Railway Headquarters.
In the previous year, on December 30, 2019, the world's first intelligent high-speed rail, the Beijing-Zhangjiakou high-speed rail, achieved 350 kilometers per hour autonomous driving in the world for the first time.
As early as September 21, 2017, the Fuxing EMU took the lead in commercial operation on the Beijing-Shanghai high-speed rail at a speed of 350 kilometers per hour, setting the world's highest commercial operation speed for high-speed rail.
84% of the important standards of the Fuxing EMU are Chinese standards
At 21:29 on April 26, Tibet's first electrified railway from Lhasa to Nyingchi railway, the entire line of catenary was successfully transmitted.
Lay a solid foundation for the opening on June 30 this year.
The main line of the Lalin Railway is 435.5 kilometers long, and the newly-built main line is 403.1 kilometers, and the design speed is 160 kilometers per hour.
After the line is opened, the Fuxing plateau internal electric dual-source (internal combustion + electric) power centralized EMU will drive into Tibet and drive to Lhasa, realizing the full coverage of the Fuxing to 31 provinces, autonomous regions and municipalities.
In July 2016, two Chinese standard EMUs successfully carried out a comprehensive test of 420 kilometers per hour rendezvous and reconnection on the Zhengxu high-speed rail; in June 2017, the Chinese standard EMU was named Fuxing and subsequently launched on the Beijing-Shanghai high-speed rail.
84% of the 254 important standards of the Fuxing high-speed EMU are Chinese standards, and its performance is better than previous EMUs.
"Every detail pursues perfection. Only 90 kinds of high-speed rail bogie assembly schemes have been designed, which have been repeatedly verified thousands of times." said Guo Rui, chief technician of CRRC Sifang Company's fitter.
Since then, the Fuxing series of EMUs has continued to increase the speed of 350 kilometers per hour 17 long formations, 250 kilometers of 8 formations, 160 kilometers of power concentration and other new types of Fuxing EMUs, and put them into operation.
The Fuxing series of EMUs is a major achievement of China's railway scientific and technological innovation.
He Huawu, an academician of the Chinese Academy of Engineering, said that my country has taken the lead in successfully exploring the changes in key technical parameters of high-speed railway systems with speeds of 400 kilometers per hour and above. High-speed EMU technologies have fully realized autonomy, standardization and serialization, which has greatly enhanced the core competitiveness of my country's high-speed rail.
Synchronously with the development of high-speed rail construction, my country has built the world's largest 12306 railway online ticketing system, with an Internet ticket sales ratio exceeding 80%.
In recent years, 12306 has launched and continuously optimized and improved online ticket purchase, autonomous ticket collection, e-ticket, mobile payment, online seat selection, station WiFi, remote ticket purchase, and all-road ticketing, and other convenient services for the people, greatly enhanced The sense of gain of the broad masses of people.
The relevant person in charge of the National Railway Group revealed that currently, the national railways are equipped with 1036 groups of Fuxing EMUs, which have accumulated 836 million kilometers of safe operation and transported 827 million passengers.
It is reported that China Railway Group has begun to lay out the new railway infrastructure, start the railway 5G private network technology system and key technology research, the smooth operation of China's railway main data center, is accelerating the application of new technologies such as artificial intelligence and the Internet of Things in the railway field.