高校宿舍楼火灾及人员疏散数值研究

摘要

为研究高校宿舍火灾烟气蔓延过程与人员疏散效果的相关联系,利用数值模拟研究了不同火灾场景下烟气流动、能见度、温度随时间变化的规律,及其对人员安全疏散的影响.研究表明:(1)火灾发生后,由于烟囱效应,烟气迅速在楼梯间蓄积,形成蓄烟池效应,堵塞疏散通道,然后逐渐发展至上部的楼层空间,对人员安全疏散极为不利;(2)高校宿舍楼人员较为集中,火灾发生时疏散人员在楼梯间易出现拥堵,人员火灾安全疏散的形势较为严峻;(3)喷淋、宿舍人数控制、建筑结构优化等安全措施能有效提高人员疏散效果,降低火灾危险性;(4)研究成果能为建筑防火设计、消防整改和宿舍管理提供科学依据.%In order to study the relationship between smoke spread process and evacuation during dormitory fire,this paper analyzes the smoke flow,visibility and temperature distribution in fires and their effect on evacuation by numerical means.The results show that the smoke reservoir may be formed in stairs because of chimney effect,which may cause the evacuation exit be blocked.The dense population in dormitory may lead to evacuation jam in stairs,causing serious situation for fire evacuation. Evacuation can be improved by use of spray equipment,control of number of people and optimum design of building structure. The research results provide guidance for building fire protection design and dormitory fire safety management.