|
KMID : 1156220100360050411
|
|
Journal of Environmental Health Sciences
2010 Volume.36 No. 5 p.411 ~ p.417
|
|
|
Impact of Soundproofing Wall of Tunnel on Particulate Matter and Noise
|
|
Jo Hyun-Woo
Lee Ji-Yeon
Liu Xiaoshan
Lee Ki-Young
|
|
|
Abstract
|
|
|
|
The Seoul metropolitan government has installed soundproofing walls in road tunnels to improve the tunnel environment for pedestrians. To evaluate the efficiency of these soundproofing walls, we measured noise levels and concentrations of PM2.5 and ultrafine particles (UFP) in tunnels with or without these walls. Although noise and UFP levels were significantly lower in the tunnels with soundproofing walls, PM2.5 levels were significantly higher: but were significantly lowered by use of a ventilation system. When PM2.5 and noise levels were simultaneously measured in a tunnel with soundproofing wall, noise level was significantly reduced but PM2.5 level was significantly higher. It is concluded that the soundproofing wall can protect pedestrians from noise, but not PM. Installation of a ventilation system is recommended for protection of pedestrians in tunnels with soundproofing walls.
|
|
|
KEYWORD
|
|
|
PM25, ultrafine particles, UFP, noise, soundproofing wall, ventilation system
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|