巷道风速对火灾烟气扩散距离的影响数值分析

Numerical Analysis on Smoke Distribution Distance Affected by Roadway Air Velocity

摘要: 为分析火灾过程中巷道风速对工作面巷道中烟气扩散速度与距离的影响，对工作面巷道火灾烟气扩散过程进行了分析，采用FLUENT对不同风速条件下工作面巷道中CO烟气扩散过程与规律进行了数值模拟与分析，结果表明：在回风侧巷道中CO扩散距离与巷道风速呈正相关，在进风侧巷道与风速呈负相关，同时，CO在进风巷道扩散过程中出现停滞状态，随风速增加，扩散停滞时间与距离逐渐减小。
- 巷道火灾 /
- 烟气扩散 /
- 数值模拟 /
- 火灾防治 /
- 烟流逆退
Abstract: In order to study the influence of the air velocity on the smoke distribution velocity and distance in the roadway in the process of the fire, this paper analyzed the smoke diffusion process in the tunnel. The smoke spread characteristics with different air-speed in the tunnel were simulated and analyzed with Fluent software. The simulation results show that there is a position correlation between CO distribution distance in the return-side tunnel and air-speed. And there is a negative correlation between CO distribution distance in the intake-side tunnel and roadway air velocity. Meanwhile, the CO distribution in the intake-side tunnel seems to stop. And the stopping time and distance decrease as air-speed increases.
- tunnel fire /
- smoke distribution /
- numerical modeling /
- fire prevention and control /
- smoke return

[1]	Zhang S, Wu Z, Zhang R, et al. Dynamic numerical simulation of coal mine fire for escape capsule installation[J].Safety Science, 2012, 50(4): 600-606.
[2]	Song Z, Kuenzer C. Coal fires in China over the last decade: A comprehensive review[J]. International Journal of Coal Geology, 2014, 133:72-99.
[3]	周孝清, 赵相相, 丁云飞, 等. 火灾时隧道截面形状对临界风速和烟气分布影响的数值研究[J].广州大学学报（自然科学版）,2006,5(2):54-58.
[4]	褚燕燕, 蒋仲安. 矿井巷道火灾烟气运动模拟研究[J].矿业安全与环保,2007,34(5):13-14.
[5]	周福宝, 王德明. 巷 (隧) 道火灾烟流滚退距离的无因次关系式[J].中国矿业大学学报,2003,32(4):407-410.
[6]	周延, 王德明, 周福宝. 水平巷道火灾中烟流逆流层长度的实验研究[J].中国矿业大学学报,2001,30(5):446-448.
[7]	周延, 王省身. 水平巷道烟流滚退发生条件的研究[J].煤炭学报,1998(4):362-365.
[8]	周延. 一个新的水平隧道火灾烟气逆流层长度模型研究[J].中国矿业大学学报,2007,36(5):569-572.
[9]	李洪. 特长铁路隧道火灾烟气蔓延特性及危害性研究[D].长沙：中南大学,2010.

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