In recent years, our country has gone further and further in the development of infrastructure. Cross-sea bridges, high-speed rail, aerospace industry, etc. are all manifestations of progress in infrastructure technology. Foreigners also affectionately call our country For "Infrastructure Mania".
At the end of 2018, my country’s total railway mileage has reached 132,000 kilometers, and my country’s total high-speed rail mileage has exceeded 30,000 kilometers. This data is greater than the total mileage of high-speed rail in other countries combined. , it can be said to be a remarkable achievement.
It can be said that my country’s rapid economic development in recent years is closely related to the construction of high-speed rail. You must know that the development of high-speed rail technology in our country started relatively late. When we began to study high-speed rail, in fact Many countries in the world already have relatively advanced technologies, but it only took my country more than ten years to develop the number of high-speed rail miles into the world. A coin will not fall over, and it has also been praised by many countries. According to the ranking of high-speed rail construction technology, our country ranks second in the world. Under this situation, many people will raise questions about our country's high-speed rail. The results are so good, but they can only be ranked second. So which country is ranked first?
The development process of high-speed rail in my country
In the past ten years, our country has been far ahead in the technology and operation of high-speed rail. You will no longer hear the sound between the wheels and the rails when taking the high-speed rail. Despite the friction sound, people standing in the high-speed rail carriage will not feel the shaking. The main reason for this lies in the rails of the high-speed rail.
This technology can be said to be my country's patented technology. No rail joints can be seen on the entire high-speed rail track. The length of the entire rail can be as long as tens of kilometers. Because there are no gaps, this is possible. The experiment of keeping a coin standing upright did not fall over.
So the entire rail is dozens of kilometers long, can it be processed? In other words, it can be processed, and then how to avoid damage caused by thermal expansion and contraction.
In fact, the entire rail is not tens of kilometers long. The reason why the rail seams cannot be seen is that our country’s key technology uses high-strength elastic fasteners to fasten the bottom of the rails, so that the rails are It will not deform due to thermal expansion and contraction.
The rails were then welded using a seamless rail welding machine. The temperature of the two rails rose to more than 1,000 degrees, and then the rails were firmly squeezed together through external force. .
It can be said that mastering this technology is the main guarantee for our country to dare to increase the speed of high-speed rail again and again. Other countries have studied our country’s high-speed rail and know the reason, but they are still because of the lack of technology. in place, resulting in delays in its realization.
Overview of World High-Speed ??Rail
As the main mode of transportation in modern society, high-speed rail can be said to have replaced the original train to a certain extent, mainly because of its high speed and price. Compared with the price of airplanes, this is very important for countries or individuals with relatively large transportation needs and high timeliness requirements. After all, time means money.
At present, there are three countries in the world with relatively advanced high-speed rail technology, namely Japan, Germany and China. Needless to say, China is the most advanced. First, let’s talk about Japan.
In fact, Japan is one of the first countries in the world to build high-speed rail, and it has also achieved good results in the field of high-speed rail. However, due to land area restrictions, the total mileage of high-speed rail in Japan is only 2,000 kilometers, so it seems In fact, Japan does not have much room for development in the high-speed rail industry.
As a world powerhouse in industrial manufacturing, Germany leads the world in industrial manufacturing, and high-speed rail is no exception. Although the current total mileage of high-speed rail is only 3,000 kilometers, Germany’s high-speed rail is the longest in the world. Advanced, plus Germany has always paid attention to environmental protection issues, which is also reflected in high-speed rail. The energy consumption of German high-speed rail is less than 2 liters per person per 100 kilometers. This performance has also made German high-speed rail technology firmly ranked first in the world.
Of course, although Germany’s high-speed rail technology is currently number one in the world, China’s high-speed rail is also second to none in terms of safety and stability. In more than ten years of operation, there have been no major accidents, which is enough. You can see the excellence of China’s infrastructure.