基于GIS的城市地震建筑物次生火灾蔓延模型  

GIS-based spread model of urban seismic secondary fire of buildings

作　　者：钟江荣[1] 张令心[1] 赵振东[1] 范开洪[2] 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080 [2]四川省地震局,四川成都601041

出　　处：《自然灾害学报》2011年第4期16-21,共6页Journal of Natural Disasters

基　　金：中国地震局工程力学研究所基本科研业务经费专项资助(2008B014);地震行业科研专项经费项目(200708036);国家重点基础研究计划(2007CB714200)

摘　　要：考虑城市地震次生火灾发生和蔓延的实际情况,以城市内地震破坏下的建筑物为火灾蔓延的主要载体,从工程应用的角度按不同结构类型给出了次生火灾蔓延参数,并建立了不同类型结构蔓延的临界距离等;考虑地震破坏下和不同风速对燃烧参数的影响,建立了以建筑物为对象的城市地震次生火灾蔓延模型。并以地理信息系统为平台,开发了城市地震次生火灾蔓延模拟系统。该模型的建立可为防御和减轻城市地震次生火灾提供辅助决策,同时对城市日常防火也有一定的参考价值。In this paper, the model of seismic secondary fire spread between the urban buildings was established on the basis of the actual circumstance of fire spread from the standpoint of engineering application. In the process of study, the fire spread parameters and critical distances were given according to the classes of structures. The influence of seismic buildings damage and wind velocity was taken into account in the model. Then, the fire spread modelling system was developed on the basis of the geography information system（GIS）. This model can provide aided decision to take precautions against and lighten the losses of urban secondary fire. It also gives a reference to urban routine fire prevention.

关 键 词：地震次生火灾 蔓延模型 地理信息系统 

分 类 号：P315.9[天文地球—地震学]