公路隧道低能耗通风和抑控烟试验研究

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中图分类号：U458.1 文献标志码：A 文章编号：1672-1098（2025）05-0087-08

Abstract： Objective The ventilation energy consumption of road tunnels is high during operation，and there are highfirerisks.It is urgent toexplore effective low-energy tunnel ventilationand smokecontrol technologies.This paper aims to explore the feasibility of negative ion purifiers for decomposing smoke and controlling fire smoke in tunnels through full-scale experiments.Methods A specialized negative ion purifier for road tunnels was developed based on single-pole ion generators.Multiple symmetrically arranged purifiers were installed on the sidewalls of an actual tunnel and test one to form a purification system.The air purification effectiveness was evaluated by monitoring negative ion concentration and fine particulate matter（PM） levels beforeand after activation.For fire scenarios，the negative ion concentration in the tunnel before the fire test，the changes in fine particulate mater concentration during the fire test，and the smoke conditions during the fire were recorded to compare the smoke control effect of the negative ion purifier under permanent activation versus temporary activation during fire events. Results The negative ion purification system significantly rduced PM levels during tunel operations， effectively improving air quality. It demonstrated excellent decomposition and purification of fire-smokeemisions，resulting indistinctsmoke stratificationand enhanced visibility.Permanentactivationof the system outperformed temporary activation during fires. Conclusion This study provides a basis for realizing a low-energy consumption ventilation and smoke control system based on negative ion purification for road tunnels.

Key words： road tunnels; negative ion purification; ventilation; fire; smoke

公路隧道能克服地形限制、缩短交通路线、提高运输效率，在交通运输领域发挥着越来越重要的作用。（剩余8525字）