矿井火灾严重程度评价

频发的矿井火灾造成了重大的人员伤亡和财产损失。对矿井生产安全的风险评价是提高其本质安全程度、减少事故发生的重要手段。笔者通过对矿井火灾燃烧过程与烟流在井巷里流动过程的分析,建立了矿井火灾烟流最高温度、烟流氧气浓度以及污染区域井巷烟流温度的数学模型;给出了用矿井火灾烟流污染范围、烟流中氧气浓度、烟流温度组成的矿井火灾严重程度评价模型;建立了火灾严重程度评价模型的特征线解算方法;并对一个9个分支的矿井通风网络进行了评价计算。

Severity Assessment of Mine Fire

Frequently occurred mine fires result in enormous casualty and property loss. Risk assessment of mine is a very important means to improve the level of essential safety and to reduce the incidence of accident. Through the analyses of firing process and smoke flow behavior in tunnel in case of mine fire, a numerical model is established for the highest temperature of the smoke, the concentration of oxygen in smoke and the temperature of smoke in the tunnel of polluted area. The model provides another model for severity assessment composed of the scope of pollution owing to smoke, the concentration of oxygen in the smoke and the temperature of smoke during the mine fire, and the method to resolve the model. And a mine ventilation network with nine subsystems is assessed through numerical calculation.