Wind and dust, just to go home for the New Year; Thousands of turns, just for the reunion of the New Year!
During the Spring Festival of the Year of the Dragon, affected by a wide range of rain and snow, many trains in many places started to reduce speed and suspend operation. People returning home for the New Year are stuck on high-speed and high-speed rail. Wuhan, Zhengzhou, Shanghai, Guangzhou, Xi'an and other railway bureau group companies dynamically adjust the passenger train operation plan according to the weather situation, take preventive measures such as speed reduction and suspension of operation, and actively avoid safety risks.
The high-speed rail lies flat, and the internal combustion engine is used to pull it.
The rain and snow in the Spring Festival in 2024 is comparable to that in 2008, and how to deal with it will not only test the emergency response ability, but also test the application of various scientific and technological methods, as well as people's attitude towards technology. In winter, common natural bad weather such as snow, rain, sleet, freezing rain, fog, and storms can cause disasters and fatal dangers to traffic.
Heavy snow, fog or heavy storms may affect the view of the train, causing the life of passengers to be at risk, so it is necessary to slow down or suspend the operation. Freezing rain will cause rail slippage, insufficient friction between wheels and rails, and affect starting, acceleration and deceleration and braking, affecting the operation safety of the train. Moreover, when the freezing rain freezes on the wires (railway catenary), the high-voltage wires above the high-speed rail are all wrapped in a thick layer of ice, and the wires shrink when exposed to cold, and the weight of the ice itself will cause the wires to break. Freezing rain may also cause a short circuit in the contact arc, that is, there are insulating and isolated parts in the components of the catenary, and the freezing rain will form ice cubes on each part, which will cause the insulation parts to fail.
In the face of these situations, there are only two ways, stop the operation or take safeguard measures and then limit the speed. However, when the Spring Festival comes, it is also the time when traffic cannot be stopped, and most people in China have to go home for the New Year or travel to various places, which is also the tradition of the Chinese - the Spring Festival migration.
According to data previously released by the Ministry of Transport, the cross-regional movement of people across the country is expected to reach 9 billion during the Spring Festival in 2024, a record high. Among them, the passenger flow of self-driving travel is about 7.2 billion, and the commercial passenger traffic of railways, highways, water transport and civil aviation is about 1.8 billion. The national railway is expected to send 4800 million passengers, with a daily average of 12 million passengers, an increase of 37% compared with the Spring Festival in 20239%。
In terms of transportation volume, rail transportation accounts for the main proportion of people's travel. Due to the development of high-speed rail, the advantages of high-speed rail have been widely recognized by people, fast, comfortable, and less expensive than airplanes, so it has become one of the most preferred modes of travel for the Chinese public. As a result, travel by high-speed rail accounts for 64 percent of rail trips4%。
However, at the juncture of the Spring Festival, the high-speed rail lies flat to make people's travel difficult and dangerous, due to the suspension of high-speed rail, resulting in many passengers stranded in the station and train for more than 17 hours, and if the weather does not improve, it will be stranded for a longer time.
This situation is actually the "high-tech paradox" faced by technology and social needs, that is, while high-tech brings people comfort, convenience and lifestyle changes, it will also bring some drawbacks and make society pay some costs. For example, today, people are already living in the information age of networking and intelligence, and it has become a necessary condition for people's lives to obtain ever-changing information and knowledge at any time. However, while information is easy to obtain, it also makes it more difficult to select and trust information. In the ocean of information, people need to carefully distinguish what information is real and what is false or virtual. This is a manifestation of what is often referred to as the high-tech paradox.
However, another manifestation of the high-tech paradox is that no technology is perfect and has shortcomings, which will create new dilemmas and new problems in our lives. This is the case with high-speed rail. Since the current high-speed rail power supply system cannot completely solve the shortage of power supply caused by freezing rain, it will make the high-speed rail lie flat, and people's convenient travel will become difficult and turtle travel.
In the face of this situation, the first thing needed is to solve the technical problem that the high-speed rail can not supply power in the face of freezing rain, and only by solving this problem will the high-speed rail have the advantages of all-weather operation to meet the comprehensive needs of people, especially in the holidays to provide a large number of people with convenient transportation for travel and travel.
On the other hand, when the high-speed rail is facing the problem of not being able to supply power in freezing rain weather can not be solved, it cannot put eggs in one basket, but needs to have a backup means of transportation, and the internal combustion engine that has been eliminated, that is, the familiar green car is an excellent record. When many high-speed railways lie down, the green car is not afraid of freezing rain, and can still roar forward, leaving the high-speed rail behind, and ensuring that it arrives on time. No wonder some netizens said that the green car was on the edge.
The green car still uses the internal combustion engine as the power, mainly burns diesel, then drives the generator, and then uses electricity to drive the wheels. The internal combustion engine does not rely on contact with the power grid and is more resilient to rain and snow. Moreover, the speed of the green train is relatively low, and the safety risk is relatively small, so it can still operate normally in snow, rain, and fog.
Of course, to solve the problem of high-speed rail not being tolerant to freezing and rain, it is not only dependent on railways, but also on air and waterways. The Ministry of Transport estimates that this year's Spring Festival is expected to reach 80 million civil aviation passengers, with a daily average of 2 million passengers. In case of freezing rain, the capacity of civil aviation can also be further improved to solve the problem of high-speed rail lying flat.
The high-speed rail will lie flat as soon as it encounters freezing rain, indicating that this technology still has defects, and it is necessary to break through the difficulties in technology to solve the problem. However, there is another dimension to the relationship between technology and society, and it is also a common sense problem in people's lives. Of course, old technologies and equipment cannot be completely abandoned until the new technologies are not fully able to meet the needs of mankind. However, even if the problem of high-speed rail lying flat in the face of freezing rain is solved, it is not necessary to completely abandon the old technology and equipment.
This is just as the reason why people cannot let paper money out of the financial circulation system at a time when online electronic payment is so convenient today. Due to natural and man-made reasons, people can also pay with paper money in case of a disconnection. Therefore, when high-speed rail is vigorously developed, it is also necessary to leave a place for diesel locomotives.
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