Cause of derailment accident of d2809 train

The cause of the d2809 train accident was the debris flow along the railway, which caused the tracks to be buried. The accident was mainly due to the continuous local rainfall accompanied by short-term heavy rainfall, and the train encountered a mudslide that suddenly collapsed and invaded the line during high-speed operation, which led to the derailment of cars 7 and 8.

Before the d2809 train accident, Guizhou Meteorological Observatory issued a weather warning. From June/KLOC-0 to June 4, there will be heavy rain to heavy rain in parts of 9 counties such as Rongjiang, and the cumulative rainfall will exceed 300 mm.

It can be clearly seen from the running track of the train that the d2809 train did not directly hit the debris flow at a speed of 250 kilometers per hour. When the d2809 train entered the Yuezhai Tunnel in front of Rongjiang Station, the driver, relying on his 26-year professional inertia, keenly discovered the abnormality of this line and took emergency braking measures in the last 5 seconds of his life to ensure the safety of most people.