公路隧道压缩空气泡沫系统灭油池火实验研究
发布时间：2018-11-16 15:07
【摘要】：为研究压缩空气泡沫与4.65 m2汽油池火作用过程中隧道内温度、热辐射强度、高温烟气等的变化规律,采用30 m×6 m×6 m公路隧道实验模型,考察公路隧道压缩空气泡沫系统对油池火的灭火性能。结果表明:在供给强度为5.1 L/(min·m2)、气液比14∶1条件下,公路隧道压缩空气泡沫系统对于汽油池火具有优异的控灭火能力,控火时间为21 s,灭火时间为27 s,且泡沫性能稳定,抗复燃能力强;压缩空气泡沫对于隧道内高温烟气层扰动很小,不会导致高温烟气下降到隧道下部,故不影响人员逃生疏散;在压缩空气泡沫作用下,隧道顶部及侧壁100℃以上高温持续时间均不超过150 s,并且可在30 s内将油池火周围的热辐射强度降至安全范围。
[Abstract]:In order to study the variation of tunnel temperature, heat radiation intensity and high temperature flue gas in the process of compressed air foam and 4.65 m2 gasoline pool fire, the experimental model of 30 m 脳 6 m highway tunnel was used. The performance of compressed air foam system for extinguishing oil pool fire in highway tunnel was investigated. The results show that under the condition of supply intensity of 5.1L / (min m2) and the ratio of gas to liquid at 14:1, the compressed air foam system of highway tunnel has excellent ability to control and extinguish the gasoline pool fire. The fire control time is 21 s and the extinguishing time is 27 s. And the foam performance is stable, the ability of resisting reburning is strong; The compressed air foam has little disturbance to the high-temperature flue gas layer in the tunnel, so it will not cause the high-temperature smoke to descend to the lower part of the tunnel, so it does not affect the evacuation of people. Under the action of compressed air foam, the duration of high temperature above 100 鈩，
本文编号：2335856
[Abstract]:In order to study the variation of tunnel temperature, heat radiation intensity and high temperature flue gas in the process of compressed air foam and 4.65 m2 gasoline pool fire, the experimental model of 30 m 脳 6 m highway tunnel was used. The performance of compressed air foam system for extinguishing oil pool fire in highway tunnel was investigated. The results show that under the condition of supply intensity of 5.1L / (min m2) and the ratio of gas to liquid at 14:1, the compressed air foam system of highway tunnel has excellent ability to control and extinguish the gasoline pool fire. The fire control time is 21 s and the extinguishing time is 27 s. And the foam performance is stable, the ability of resisting reburning is strong; The compressed air foam has little disturbance to the high-temperature flue gas layer in the tunnel, so it will not cause the high-temperature smoke to descend to the lower part of the tunnel, so it does not affect the evacuation of people. Under the action of compressed air foam, the duration of high temperature above 100 鈩，
本文编号：2335856
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2335856.html
