Abstract: In order to identify and divide the responsibility of a fire accident caused by a warehouse jointly managed by multiple companies, video analysis technology was used to build an experimental platform to simulate the fire source and analyze the location of the fire source. The fire prevention scheme of this kind of warehouse was given through modeling analysis. First, the accident is investigated and analyzed to determine the reference line. Next, the fire site is simulated by building an experimental platform to determine the location of the initial fire source. Then, on the basis of determining the location of the fire warehouse, the physical model is established by FDS. Finally, through comparative analysis, the fire prevention measures of this kind of warehouse are obtained. The experimental results show that the distance between the bright area of warehouse C and the accident site is 12.78 m, which is consistent with the data, 12.70 m. Therefore, the initial location of the fire source is the warehouse C. In the fire prevention of this kind of warehouse, attention should be paid to the problems of cargo placement, smoke exhaust and ventilation, and automatic fire extinguishing devices in the warehouse center.

Key words: warehouse fire, accident investigation, fire simulation, fire prevention