城市消防安全风险态势计算方法研究

Study on Calculation Method of Fire Safety Risk Status and Trend

为了实现城市消防安全的预测与预警,采用计算流体力学的方法对城市中心区消防灾害进行数值模拟,根据获得的温度分布和速度分布数据对风与火灾、烟气蔓延的规律进行了关联分析.建立了风险态势模型,绘制出了风险态势区域,为突发事件发生时的应急处置提供了依据.并提出了以常态管理为主体,多种城市管理方式向协调发展的综合应急体系的方法.

Fire risk Forcasting and early warning is important to the fire protection of city.Computational Fluid Dynamics technology has been used for outdoor fire risk evaluations of fire hazard and smoke spreads in city center.The relationship between wind effect and the fire spread among buildings was studied by 3 cases simulation： winter case,summer case and a fire case.Fire safety status and trend analysis map was drawn.5 grads alarm level was defined and recognized by colors and lines,which is useful for fire fighting,evacuation,and making of emergency advisory plan.Advises for emergency response management have been summarized based on study result.