At around 18:52 on December 14, 2023, two trains rear-ended each other in the upbound section from Xierqi Station to Life Science Park Station on the Changping Line of the Beijing Metro, resulting in 130 fractures and no deaths. According to the Beijing Public Security Forensic Identification Center, 3 people were seriously injured and 70 people were slightly injured. The accident caused a direct economic loss of approximately 9.508 million yuan. Recently, the municipal government approved the conclusion of the investigation into the rear-end collision of a train on the Changping Line of the Metro. After investigation, it was determined that this was a production safety accident that caused multiple injuries. The accident occurred due to extended train braking distance due to snow, failure of operating units to implement snow response measures, improper handling by train dispatchers, and improper operation by train drivers.
After the accident, central leaders issued important instructions and set forth clear requirements for accident rescue, casualty treatment, accident cause investigation, rail transit safety management, and extreme weather response. The Emergency Management Department and relevant leaders of the Municipal Party Committee and Municipal Government went to the scene to direct and dispatch emergency response. The municipal government established an on-site command center to coordinate and promote rescue and treatment, operational safety, information release, and aftermath disposal.
After the accident, the municipal government established an accident investigation team to investigate and deal with the accident. Through on-site inspection, investigation and evidence collection, video analysis, detection and identification, simulation tests, expert argumentation, etc., the accident investigation team found out the accident, cause of occurrence, injuries, direct economic losses and the situation of relevant units, and determined the nature of the accident. The main problems existing in the relevant responsible units were identified, suggestions for solutions were put forward, and rectification and preventive measures were proposed.
The accident investigation team found that the train that rear-ended the accident was Car 032, and the train that was hit was Car 024. The accident section was the upbound section from Xierqi Station to Life Science Park Station. The direct cause of the accident was that on that day, the Beijing area was in the blizzard orange warning period, snow was falling in the area where the incident occurred, the city subway company's preparations for the incident were insufficient, and safety measures such as speed limits and speed reductions in snow were not specific enough; the traffic dispatcher on duty was When the line congestion was not completely eliminated, the vehicle 032 was detained and the driver of vehicle 032 was not informed of the temporary parking in the 024 section ahead; the driver of vehicle 032 was driving in manual driving mode and failed to take braking measures in time after the system prompted to slow down; Affected by snowfall after the braking measures were taken, the track surface became slippery, the wheel-rail adhesion coefficient decreased, and the braking distance of the 032 vehicle was extended, resulting in a rear-end collision with the 024 vehicle that was temporarily parked in the section ahead.
The main problems exposed by the accident are: the main responsibilities of the operating units are not fully implemented, there are blind spots and loopholes in safety risk identification and hidden danger investigation and management, and specific measures such as driving intervals and speed limits and speed reductions that are different from daily operations are not formulated for snowfall weather; industry regulatory authorities It failed to effectively implement the requirement that "management of the industry must manage safety", organized and carried out large-scale inspections and rectification of safety hazards, and failed to supervise operating units to refine work measures and consolidate work responsibilities.
The accident investigation team will hand over clues and relevant materials to the Municipal Commission for Discipline Inspection and Supervision to the Municipal Commission for Discipline Inspection and Supervision in accordance with regulations. After an accountability investigation, the Municipal Commission for Discipline Inspection and Supervision held a total of 18 people accountable, including Beijing Metro Operations Co., Ltd., the operating unit of the subway Changping Line, and Beijing Transportation Commission, the industry regulatory agency. In addition, the public security organs have opened an investigation into the persons responsible for the accident, and the Beijing Subway Operation Co., Ltd. will deal with the relevant persons in accordance with regulations.
In response to the problems exposed in the accident, the accident investigation team summarized the main lessons in four aspects: the safety development concept was not firmly established enough, the main responsibilities of the operating units were not implemented in place, the quality and efficiency of industry supervision was not high enough, and emergency response preparations were insufficient. At the same time, five suggestions for rectification and prevention measures were put forward: strengthen bottom-line thinking and firmly establish the concept of safe development; improve technical prevention methods to improve intrinsic safety levels; standardize operation management and improve risk prevention capabilities; deepen collaboration and prepare for emergency response; Strict safety supervision and supervise the implementation of main responsibilities.
(Beijing Daily client reporter Ren Shan)