Journal of the Korean Society for Railway (한국철도학회논문집)

The Korean Society for Railway (한국철도학회)
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Characteristics of Wind Speed and PM10 Concentration underneath Railway Trains

도시철도 차량 하부의 풍속 및 미세먼지 농도 특징

  • Kim, Jong Bum (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Woo, Sang Hee (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Jang, Hong-Ryang (Annex Research Institute, DK Industrial Co., LTD) ;
  • Chou, Jin-Won (Annex Research Institute, DK Industrial Co., LTD) ;
  • Hwang, Moon Se (Technology Research Center, Seoul Metropolitan Rapid Transit Corporation) ;
  • Park, Hyung-Koo (Annex Research Institute, DK Industrial Co., LTD) ;
  • Yoon, Hwa Hyeon (Technology Research Center, Seoul Metropolitan Rapid Transit Corporation) ;
  • Jung, Joon-Sig (Indoor Environment & Noise Research Division, Environmental Infrastructure Research Department, Environmental Research Complex) ;
  • Bae, Gwi-Nam (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology)
  • Received : 2016.12.13
  • Accepted : 2017.02.22
  • Published : 2017.02.28
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Abstract

Since operation of railway trains is a major source of particle pollution in tunnel air, a particle removal device can be an effective measure to remove wear particles. To obtain design conditions of the particle removal device that will be installed underneath the railway trains, the wind speed and particle concentration underneath the trains were investigated using a three-dimensional ultrasonic anemometer and a DustTrak aerosol monitor, respectively. The measurements were made for the trains running on Seoul Metropolitan Subway Line 5 on February 10, 2015. The data were analyzed according to the track geometry (straight, curved) and train speed pattern (acceleration, cruising, and deceleration) between stations. Train speed was also analyzed. The average wind speed and $PM_{10}$ concentration underneath the trains were ~30% of the train speed and ${\sim}200{\mu}g/m^3$ for both straight and curved sections. Average $PM_{10}$ concentration for deceleration sections was higher than that for acceleration sections.

도시철도 차량의 운행은 터널 공기를 오염시키는 주된 원인이므로, 마모입자를 제거하는데 집진장치가 유용한 수단이 될 수 있다. 차량의 하부에 장착될 수 있는 집진장치의 설계조건을 파악하기 위하여 3차원 초음파 풍속계와 입자측정기를 사용하여 차량 하부의 풍속과 입자농도를 조사하였다. 2015년 2월 10일 수도권 지하철 5호선에서 운행되는 차량을 대상으로 측정하였다. 측정자료는 역 사이 노선의 형상(직선, 곡선)과 차량 속도패턴(가속, 정속 및 감속)을 구분하여 분석하였다. 차량속도도 함께 분석하였다. 직선 및 곡선 구간 모두 차량 하부의 평균 풍속은 차량속도의 약 30%이었고, 미세먼지($PM_{10}$) 농도는 약 $200{\mu}g/m^3$이었다. 감속구간에서 평균 $PM_{10}$ 농도는 가속구간에 비해 더 높았다.

Keywords

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