交叠型群洞车站站厅火灾排烟口相对位置排烟效果影响分析

Analysis of the Influence of the Relative Position of the Smoke Exhaust in the Station Hall of the Overlapped Group Holes Station Fire

以青岛某地铁车站为研究对象,研究火灾工况下风口相对风管位置设置和风口尺寸对地铁站厅层火灾烟气流动的影响,通过对不同时刻人眼高度处的温度值、CO浓度值、可见度数值的分析发现:风口位置位于风管上部效果要优于侧部和下部;通风量一定时,不同风口面积对烟气流动影响较小。

Taking a subway station in Qingdao as the research object,this paper studies the influence of the location and size of the tuyere relative to the tuyere on the smoke flow in the subway station hall under fire conditions.Through the analysis of the temperature,CO concentration and visibility at different time,it is found that the effect of the tuyere located at the upper part of the air duct is better than that of the side part and the lower part and the influence of different tuyere areas on flue gas flow is small under the condition of a certain amount of ventilation.