针对严重影响我国经济发展和社会稳定的城市重大事故，研究了典型城市重大事故动态模拟的模型和方法，并开发了反应及时、决策科学和资源高效利用的事故应急决策支持系统，主要包括以下功能：城市不同功能区典型重大事故的动态模拟；城市不同功能区典型重大事故应急决策；城市不同功能区、不同事故类型的应急预案库；城市重大事故应急决策与指挥调度决策。该系统充分运用了先进的信息管理手段和工程技术，可及时发现事故隐患、控制事故扩展和蔓延并及时采取救援措施，使财产损失和人员伤亡减少到最低程度。

Aiming at urban accidents that affect the development of urban economy and social stability, this paper discussed the dynamic simulation models and techniques of typical urban fatal accidents, and developed the assistant decision support system for urban emergency response. The function of this system included： Dynamic simulation of the typical accident of different functional district of city; Decision for the response to grave accident of different functional district of city; Emergency preparedness plan database for different functional district in the city and different type of accidents; Decision for response to grave accident of city and decision for commanding and dispatching. This system used advanced information management and engineering, could find the hidden accident, control the accident and rescue in time, thus reduced the property loss and casualty to minimum extent.