Abstract

The fire protection design in a large-scale interchange station is always a great challenge. In this paper, a series of numerical simulations were conducted to investigate the performance of emergency ventilation modes for three potential multisource fire scenarios. The parameters that influence passengers’ evacuation were analyzed. The results demonstrated that unreasonable co-operation ventilation mode enhances the smoke propagation in other lines. The interaction of ventilation modes in different lines must be considered in practice. When the multisource fires occur on the same floor of both lines, the most effective scheme is to adopt the same ventilation mode in each line. When the multisource fires occur on different floors of both lines, it is difficult to maintain a balance of the exhaust capability in each line. The optimal ventilation modes were finally proposed for three fire scenarios based on the smoke discharge capability in the whole station.

摘要

大型换乘站的消防设计一直是一个很大的挑战。在本文中，进行了一系列数值模拟，以研究应急通风模式在三种潜在多源火灾情景下的性能。分析了影响乘客疏散的参数。结果表明，不合理的合作通风方式会增强烟气在其他线路中的传播。在实践中必须考虑不同线路中通风模式的相互作用。当多源火灾发生在两条线路的同一楼层时，最有效的方案是每条线路采用相同的通风方式。当多源火灾发生在两条线路的不同楼层时，很难保持每条线路的排气能力平衡。