A new method for personnel protection failure evaluation in metro fire with multiscenario coupled three dimensional model

Abstract

With a closed environment and dense population, urban metros are difficult to evacuate quickly in the case of fire, which often leads to serious consequences such as stampedes. To deal with metro fires effectively, this paper presents a three-dimensional model for assessing the failure probability of personnel protection. First, scenario elements of metro fire evolution were selected based on typical cases and traditional performance-based evaluation methods, and a scenario element database was constructed. Second, based on this approach, a three-dimensional evolution model of the metro fire scenario was established to visually express the interaction relationship of each scenario element in plane dimensions. Finally, an evaluation model of the personnel protection failure risk index was constructed by coupling the metro fire, emergency management and trapped personnel, and the failure probability of personnel protection was calculated. This model can evaluate the real-time risk of death in the process of metro fire accidents and provide an important reference for emergency decisions and plan deployment.