非对称双火源倾斜隧道顶棚温度模拟分析  

Simulation analysis of roof temperature in an asymmetric double-fire source inclined tunnel

作　　者：许秦坤[1] 李双 XU Qinkun;LI Shuang(School of Environment and Resources,Southwest University of Science and Technology,Mianyang Sichuan 621000,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621000

出　　处：《工业安全与环保》2025年第4期37-41,共5页Industrial Safety and Environmental Protection

摘　　要：为了给隧道火灾救援和事故预防提供依据,以非对称双火源隧道为研究对象,采用FDS研究倾斜隧道顶棚温度与隧道坡度、火源间距之间的变化关系。结果表明,双火源间距一定时,隧道顶棚纵向温升会随坡度增加向右偏移,顶棚最高温度受大功率火源影响较大;小功率火源位于上游对顶棚最高温度有明显促进作用,其温度增长与火源间距呈现一定线性关系;小坡度情况下,火源间距增加对最高温度有削减作用,而对大坡度隧道作用不明显。双火源中心离地3 m发生烟气热分层,上方温度随坡度增加逐渐下降,下方温度随坡度增加逐渐上升。To provide a basis for tunnel fire rescue and accident prevention,the relationship between ceiling temperature and both tunnel slope and fire source spacing was investigated in an asymmetric double-fire-source inclined tunnel using FDS simulations.The results show that,for a fixed fire source spacing,the longitudinal temperature rise of the tunnel ceiling shifts to the right as the slope increases,with the maximum ceiling temperature being significantly influenced by the high-power fire source.When the low-power fire source is upstream,it has a pronounced effect on increasing the maximum ceiling temperature,which shows a linear relationship with the fire source spacing.For small slopes,increasing the fire source spacing reduces the maximum temperature,while for larger slopes,the effect is negligible.At a height of 3 m above the ground,thermal stratification of smoke occurs,with the upper layer temperature decreasing and the lower layer temperature increasing as the slope increases.

关 键 词：隧道火灾 双火源 顶棚温度 FDS 消防救援 

分 类 号：R28[医药卫生—中药学]