工矿自动化2025，Vol.51Issue(7)：66-74,82,10.DOI:10.13272/j.issn.1671-251x.2025060032
不同灾变条件下矿井胶带火灾烟气蔓延规律研究
Study on the smoke propagation characteristics of mine conveyor belt fires under different disaster scenarios
摘要
Abstract
At present,research on mine belt fires mainly focuses on the distribution characteristics of the temperature field,the evolution of smoke concentration,and the quantification of critical wind speed in straight roadways.However,there is still a lack of systematic investigation into the coupling characteristics of temperature field,CO concentration,visibility,and critical wind speed in the interconnected layout of the main transportation roadway and the auxiliary connecting roadway,which makes it difficult to provide comprehensive support for safe evacuation and ventilation control in complex belt fires.To address this problem,a fire simulation model was established using Pyrosim software.Visibility,temperature,and CO sensors were installed at different positions and heights to explore the dynamic evolution of fire-related environmental parameters such as CO concentration,temperature,and visibility in the main transportation roadway and the auxiliary connecting roadway.The study also revealed the dynamic coupling mechanism between harmful gas diffusion and environmental parameters within roadways during belt fires.The results showed that the roadway wind speed had a significant impact on the direction and speed of smoke spread.The critical wind speed for the simulated fire source was 2.5-3.5 m/s.When the roadway wind speed was low,a large amount of smoke was generated and accumulated due to incomplete combustion of combustibles.When the wind speed was lower than the critical wind speed,smoke backflow occurred.At a wind speed of 1.5 m/s,the maximum CO volume fraction and temperature appeared on the windward side,reaching 1 515.5×10-6 and 143.5 ℃,respectively,and the proportion of low visibility was also highest at this wind speed.Smoke backflow could be completely suppressed when the wind speed exceeded 3.5 m/s.关键词
胶带火灾/烟气蔓延规律/能见度/温度/CO浓度/巷道风速Key words
belt fire/smoke spread pattern/visibility/temperature/CO concentration/roadway wind speed分类
矿业与冶金引用本文复制引用
张伟,刘欢,李明辉,周如海,吴金钟,王伟峰..不同灾变条件下矿井胶带火灾烟气蔓延规律研究[J].工矿自动化,2025,51(7):66-74,82,10.基金项目
陕西省重点研发计划项目(2022QCY-LL-70) （2022QCY-LL-70）
陕西省自然科学基础研究计划资助项目(2025SYS-SYSZD-116) （2025SYS-SYSZD-116）
陕西省秦创原科学家与工程师队伍建设项目(2023KXJ-052) （2023KXJ-052）
西安市"科学家+工程师"队伍建设项目(2024JH-KGDW-0111). （2024JH-KGDW-0111）
