Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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Comparative Analysis of Particulate Matter, Black Carbon, and Noise Levels Before and After Installation of a Safety Wall in a Pedestrian Walkway within an Urban Tunnel

도심터널 보행로 안전벽 설치 전후의 미세먼지, 블랙카본, 소음 수준 비교

  • Myoungho Lee (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Jongmin Park (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Sohyun Kang (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Jeongyeon Park (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Taehong Kwon (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Chungsik Yoon (Institute of Health and Environment, Seoul National University)
  • 이명호 (서울대학교 보건대학원) ;
  • 박종민 (서울대학교 보건대학원) ;
  • 강소현 (서울대학교 보건대학원) ;
  • 박정연 (서울대학교 보건대학원) ;
  • 권태홍 (서울대학교 보건대학원) ;
  • 윤충식 (서울대학교 보건환경연구소)
  • Received : 2024.04.30
  • Accepted : 2024.08.20
  • Published : 2024.09.30
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Abstract

Objectives: People using pedestrian walkways within tunnels may be exposed to environmental hazards that can have adverse effects on their health. This study aimed to measure changes in the levels of particulate matter (PM10), black carbon (BC), and noise after the installation of safety walls on pedestrian walkways within tunnels. Methods: Measurements were taken at the entrances on both sides of a tunnel and at the central point, both before and after the installation of pedestrian safety walls. Additionally, measurements were conducted by distinguishing between non-rush hour and rush hour periods to account for variations in the number of vehicles using the tunnel. A SidePak was used for PM10 measurements, an aethalometer for BC, and a sound level meter for noise. Results: PM10 showed the highest concentrations at the center of the tunnel at both pre- and post-installation of safety walls, as well as during rush hour periods. After the installation, the concentration at the center was 31.09 ± 14.02 ㎍/m3 (19.44 ± 8.02% increase). During rush hour, BC concentration reached 2.28 ± 1.55 ㎍/m3, indicating a 26.71 ± 13.19% increase compared to non-rush hour. As for noise, installation of safety walls reduced noise levels about 3 - 6 dB (8.10 ± 3.31% decrease). Conclusions: It was confirmed that installing safety walls on pedestrian walkways within the tunnel can reduce noise levels. However, the interior of a tunnel is a poorly ventilated environment, and exposure levels vary depending on the length of the tunnel. Therefore, the development of safety measures related to this issue is warranted, and further research on harmful substances within the tunnel should be conducted.

Keywords

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