What caused the derailment of a train in Scotland, England?

Hello, I'm glad to answer your question. The following is my personal opinion:

1, let's start with the event to analyze:

On August 12, a train was seriously derailed on the way from Aberdeen, Scotland, England to Haven. At present, 3 people have died and 6 people have been sent to hospital. There were 12 people on the train, including 6 passengers and 6 staff members, and a lot of smoke was emitted from the scene. Thirty rescue vehicles have arrived at the scene. Witnesses said that the train crashed into the embankment after the landslide, and the local area was hit by heavy rain the night before.

According to witnesses, the derailment was caused by external factors, and the specific reasons have to wait for the official announcement. Then let's analyze the reasons that easily lead to train derailment.

1) Track or line is damaged. The track is uneven, one side is high and the other side is short. Due to weather and natural disasters, the track breaks and collapses, resulting in gauge deformation and deviation from the standard value, thus deviating from the track.

2) The lateral force of the train is too large or the vertical force is reduced. For example, when turning, the height will generally be raised outside the track, so that under the action of gravity, an inward force from the outside will be generated to balance the centrifugal force generated by turning, which requires speed. If the wheels are abnormal, or the train is speeding in some places, it will lead to insufficient friction and derailment. ?

3) There are obstacles on the track or trains collide. This is also the possible cause of the accident. Suddenly the landslide directly hit the train, causing derailment.

The first two points are not easy to happen, because the train will be overhauled every time it runs, while the EMU train will be overhauled once a day, and the track is also frequently maintained, including regular comprehensive maintenance, sporadic emergency maintenance and patrol maintenance. The maintenance car is basically running all the time, and the road section is also inspected and repaired manually, so the safety of the track is also very guaranteed. Accidents are basically emergencies, and some irresistible natural disasters, such as mudslides, make the damage not found or repaired in time.