7 What are the causes of the 23 bullet train accident and the 723 bullet train accident?

D3115 arrived at Yongjia on time, and it was supposed to stop for a minute or two, but the traffic light ahead was red. Dispatchers dispatched electricity to find out what was going on ahead, causing D3115 to stop for about half an hour. For the same reason, D301, which was not supposed to stop, arrived more than 10 minutes later and was forced to stop.

However, the electric uncle did not understand the technology and could not repair it for a long time, so the dispatcher had to implement "extraordinary station control", that is, to replace the computer with manpower scheduling, so that the driver could turn off the LKI system, boldly run the red light, travel at a speed of 20 kilometers per hour, and rely on visual inspection to determine that there is no obstacle ahead. Unfortunately, the dispatcher is also an uncle-in-law who doesn't understand business, so he made the fatal mistake of taking D3115 as the D301 that had to be sent first, so he mistakenly let it drive away first. At this time, the electrical service of the overhaul signal could not find the problem, and simply put the relay of the signal machine in the high resistance position manually, so the red light became a constant green light, and the dispatch saw the situation, thinking that the fault had been eliminated, so the D301 was opened.

D301 did not know that the signal light was artificially turned green by the electric operator, but when he saw the green light all the way ahead, he accelerated according to the normal operation, and soon caught up with the D3115 in front of him, which was driving very slowly. The dispatcher saw that the two cars were getting closer and closer on the screen, and he was scared into a sweat, he thought that the car behind him was D3115, and immediately ordered D3115 to stop, so D3115 stopped and was hit by D301 behind. The dispatcher watched the two cars collide on the screen, finally realized what mistake he had made, and collapsed on the spot.

Yes, but it will take some time! Are you in a hurry?

Elementary school level or secondary school level? Or is it at a professional level?

What is the description of the accident? Reflections after the accident? Or whatever.

Human causes, possible causes of accidents: scheduling negligence, scheduling program loopholes.

For any railway professional, an EMU collision is an incredible thing. Because the train is equipped with an automatic protection system (ATP), if the rear vehicle is approaching the front vehicle, the system will automatically cause the rear vehicle to stop, and the driver "can't hit it even if he wants to". According to the "Oriental Morning Post", Wang Mengshu, an academician of the Chinese Academy of Engineering and a senior adviser to the national railway construction, said that China's high-speed rail is very successful in terms of control systems and signal systems, and can ensure that the back of the stupid Changzai certificate does not collide and the front does not crash.

According to the preliminary cause of the accident revealed by the core people within the railway system, when the two cars were advancing at the same time, the lightning broke the safety beam of the ground equipment of a railway signaling system on the Yongwen Line. However, due to the problems in the circuit design of the ground equipment itself, the result is that the fault is upgraded, the circuit is wrongly coded, and the red code is issued into a green code, that is, "a green light signal is issued".

There was one bullet train accident in Wenzhou, July 23, 2011. The director of the Shanghai Railway Bureau was dismissed on the spot due to the rear-end collision of the Wenzhou bullet train. At 20:34 on the evening of the 23rd, the D3115 and D301 trains collided with each other, and the location was between Yongjia and Wenzhou on the Hangzhou-Shenzhen Line.

So far, 35 people have died and 210 have been injured.

This accident caused a rear-end collision due to the loss of power caused by a lightning strike. Wang Yongping said in an interview with reporters on the morning of the 24th.

A person from the Third Bureau of China Railway who cleaned up the site said that the pit was not dug to bury the carriages, but to prepare for the next lifting and unloading. A 300-ton crane is required to lift the carriage off the bridge, and the crane has to make room for entry.

There was one bullet train accident in Wenzhou, July 23, 2011.

"Ningbo-Wenzhou Line Particularly Serious Railway Traffic Accident (Yongwen Railway EMU Rear-end Accident) Netizen Weibo Information Selection.

Cao Lin of China Youth Daily: In a word, 7 minutes after this netizen posted this Weibo, that is, at 20:34, two carriages of the D3115 bullet train derailed and fell off the bridge. A lady sitting in the first class seat in the 15th carriage of the D3115 train recalled the situation at that time, saying that the lightning was very strong at one o'clock in the evening, and the bullet train stopped in place at that time.

As a result, as soon as the car started, the lights suddenly went out, and when I sat in the seat, I felt like I was electrocuted. Then I heard a loud noise. @居然居:

Not far away, the bullet train collided, and life was like smoke, and it flew away in an instant.

Heesong: Ladies and gentlemen, I've arrived home safely now! I was on the train tonight, and it was about 20:00

Around 35, the carriage rushed forward quickly, but fortunately I was sitting in the seat! After taxiing for about a few minutes, the whole carriage was pitch black. The carriage also leans to the left.

It took about ten minutes for someone to let us slowly come out of the car door! Our group walked slowly out of the muddy road on the side of Xiao Mountain! Most of the people who evacuated us were the passengers in the carriage.

Lao Rong: My private message: Lao Rong:

My classmate was on the train where the accident happened tonight, and he said that the hammer was just an ornament, and it couldn't open the window at all, but luckily there was a door before they came out. I hope that the Ministry of Railways and other relevant departments will immediately and thoroughly investigate the hammer (Sichuan people see this, don't be serious!) Zhejiang Satellite TV went live again.

It looks like the rescue team broke the window and started pulling out. Judging by the image, it is clear that it is a body that is being pulled.

Rear-end derailment: D301 from Beijing to Fuzhou and D3115 from Hangzhou to Fuzhou, to Xia'ao Road in the Shuangyu Road section, D3115 bullet train was rear-ended by D301 bullet train, D3115 multiple carriages derailed, and four cars fell off the bridge;

Cause of the accident: D3115 lost power and stopped after being struck by lightning, causing D301 to rear-end collision; And that's just the surface.