Journal of The Korean Society For Urban Railway (한국도시철도학회논문집)

The Korean Society for Urban Railway (한국도시철도학회)
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An Analysis of the Rail Wear Measurements for the Prediction of Particulate Matter Emission in Urban Railway

도시철도 미세먼지 발생량 예측을 위한 레일 마모량 분석

  • Yoon, Cheonjoo (Graduate School, Korea National University of Transportation) ;
  • Ko, Huigyu (Graduate School, Korea National University of Transportation) ;
  • Bang, Myeongseok (Graduate School, Korea National University of Transportation) ;
  • Kwon, Hyeokbin (Graduate School, Korea National University of Transportation)
  • 윤천주 (한국교통대학교 교통대학원) ;
  • 고희규 (한국교통대학교 교통대학원) ;
  • 방명석 (한국교통대학교 교통대학원) ;
  • 권혁빈 (한국교통대학교 교통대학원)
  • Received : 2018.10.30
  • Accepted : 2018.11.29
  • Published : 2018.12.30
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Abstract

The rail wear measurements in urban underground railway have been analyzed to predict the particulate matter emission caused by rail wear which is one of the major sources of particulate matter emission for underground railway systems. From the rail profile variations measured in the interval of one and half year by dedicated rail wear measuring instrument over the commercial urban underground railway line, 'line-s' which is about 45km long, the characteristics as well as the amount of rail wear have been analyzed after dividing the whole line into about 170 section with radius of curve(R). It has been concluded that the vertical wear parameter V0 and corner wear parameter C0 have been selected to represent the wear amount of straight and curved rail respectively. The amount of rail wear as well as the particulate matter emission by rail wear over the whole line normalized by the rail length as well as the number of train has also been deduced from the relationship between the rail wear parameters and the amount of rail cross-section area.

도시철도에서 지하 터널의 미세먼지는 여러 가지 요인에 의하여 발생하고 있다. 도시철도 미세먼지 발생량을 예측하기 위하여 여러 가지 발생요인 중 레일 마모량 분석에 관한 연구를 수행하였다. S호선 구간(약 45km)에서 1년 6개월 간 레일마모측정장치에서 측정된 레일 마모 데이터를 곡선반경(R)의 변화에 따라 약 170개 구간으로 구분하였으며, 레일 마모 측정값 중에서 직마모량(C0)와 편마모(V0)량을 이용하여 곡선반경에 따른 레일 마모량 관계를 분석하고, 직선구간과 곡선구간에서 각각 구간평균 편 직마모량과 노선평균 편 직마모량을 산출하였다. 레일 마모량과 레일 단면적의 상관관계를 분석하여 단면적에 대한 근사식을 구하고, 레일 C0와 V0의 변화량을 이용하여 레일 마모에 의한 미세먼지 발생량을 산정하였다.

Keywords

Acknowledgement

Supported by : 한국교통대학교

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