能否保证火灾时期人员安全疏散到建筑物外是判断地下商场防火设计是否符合要求的重要标准。为了预测火灾时期人员疏散行为的性状 ,开发了火灾时期人员疏散计算机模型 FEgress,并通过人员疏散实验验证了该模型的准确性。模型可以计算在建筑物内不同位置处发生火灾时 ,从火灾发生到人员疏散结束所需的时间 ,与火灾模拟模型相结合 ,可以评价火灾时期人员生命的安全性。本文详细阐述了 FEgress的原理及有关概念 ,并对其应用作了简单介绍 Is it possible to ensure that the safety of personnel evacuated to the outside of a building during fire is an important criterion to judge whether the fire protection design of an underground mall meets the requirements? In order to predict the evacuation behavior during the fire, a fire evacuation computer model, FEgress, was developed. The evacuation experiment was used to verify the accuracy of the model. The model calculates the time it takes for a fire to occur at a different location within a building from the time of the fire to the end of the evacuation and combines with a fire simulation model to evaluate the safety of the lives of people in a fire. This article elaborates on the principles of FEgress and related concepts, and makes a brief introduction to its application