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为解决公路隧道火灾烟气对人员的影响,以单洞对向交通隧道火灾为基础,建立火灾数值计算模型。在火灾烟气控制中引入模糊控制理论,模拟烟雾在隧道内两组射流风机之间200m的区间内往复运动,通过改变射流风机的风速和方向,分析在时间为180、360s内,风速为1.0、1.5m.s-1的火灾烟雾扩散情况,研究了控制区域内烟气的分布和影响规律。计算结果表明:在火灾点两侧分别开启射流风机,间歇为30s、风速为1.0m.s-1的运行烟气属于小振幅运动,烟雾基本控制在火源点左右两侧50～80m的位置;间歇为60s、风速为1.5m.s-1的运行烟气属于大振幅运动,烟雾基本控制在火源点左右两侧80～100m的位置;烟气小振幅运动要优于大振幅运动。
In order to solve the influence of smoke from highway tunnel on personnel, a numerical model of fire was established based on the single-hole-oriented traffic tunnel fire. In the flue gas control, a fuzzy control theory was introduced to simulate the reciprocating motion of smoke between two groups of jet fans in a tunnel within 200m intervals. By changing the wind speed and direction of the jet fans, the wind speed was estimated at 180 and 360 seconds , 1.5ms-1 fire smoke spread, the study of the control area flue gas distribution and influence law. The calculation results show that: the jet fans are opened on both sides of the fire point intermittently for 30s and the wind speed is 1.0ms-1. The smoke is in the small amplitude movement, and the smoke is basically controlled at 50 ~ 80m on the left and right sides of the fire source. 60s, the wind speed of 1.5ms-1 is a large-amplitude movement of fumes, the basic control of smoke at the ignition source on both sides of the 80 ~ 100m position; small amplitude of flue gas movement is better than large amplitude.