E3S Web Conf.
Volume 356, 2022The 16th ROOMVENT Conference (ROOMVENT 2022)
|Number of page(s)||4|
|Section||Underground Environment and Specialized Application|
|Published online||31 August 2022|
Influence of Ventilation And Decentralized Purification on Pollutant Control in Urban Highway Tunnels without Exhaust Shaft
1 Beijing Gonglian Highway Connecting Line Co., Ltd., Beijing 100161, China
2 Beijing Capital Highway Development Group Co., Ltd., Beijing 100073, China
3 Beijing General Municipal Engineering Design & Research Institute Co., Ltd., Beijing 100082, China
4 School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
5 Department of Building Science, School of Architecture, Tsinghua University, Beijing 100084, China
* Corresponding author: firstname.lastname@example.org
Limited by multiple factors, such as land use planning, landscape coordination and environmental standards, the ventilation conditions of the urban highway tunnels are insufficient, and therefore the joint control of ventilation and purification becomes a necessary solution. In this study, the effect of number, location of decentralized purification equipment, and the tunnel ventilation rate on pollution in the tunnel are studied using one-dimensional calculation. The results show that the arrangement of purification equipment can reduce the design ventilation rate to a certain extent. When purification equipment is arranged, the maximum NO2 concentration can be reduced by up to 30.9%, and the average NO2 concentration can be reduced by up to 18.2% compared with that without purification. The purification equipment arranged in the rear section of the tunnel is conducive to reducing the concentration of pollutants at the exit, while the arrangement in the middle section of the tunnel is conducive to reducing the average concentration of pollutants in the tunnel.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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