This study measured the particulate matter (PM) in a subway tunnel using a dust spectrometer and estimated the PM10 and PM2.5 using a Kriging method. For the hourly measurement, a probe was attached inside the cabin and put through the window to collect data from the outside. The Kriging method is a spatial analysis method, and time and spatial data were applied in the subway tunnel along with a PM concentration map. The result of the measurement shows that PM10 is 31.9~271.3 μg/m3 and PM2.5 is 30.9~209.5 μg/m3. In addition, The pollutant map shows that some sections have a higher concentration than other sections because of the depth and curvature of tunnel and traffic volume on the section and local construction. Also, the results show that differences concentration at different times of sampling could be distinguished. The highest concentration was found at 3 pm while the lowest was at 12 pm. We expect to use the pollutant map in planning air quality improvements for the tunnel.

1. 서 론
 2. 연구방법
  2.1 측정방법
  2.2 Kriging 분석법
  2.3 오차합 분석(error-sum analysis)
 3. 결 과
  3.1 측정구간에서의 PM10 및 PM2.5 농도
  3.2 Kriging 분석법 적용결과
  3.3 Kriging 분석법의 검증
 4. 결 론
 References

• 이용일(한국철도기술연구원 교통환경연구팀, 성균관대학교 기계공학과) | Yongil Lee
• 정원석(한국철도기술연구원 교통환경연구팀, 성균관대학교 기계공학과) | Wonseog Jeong
• 최교민(한국철도기술연구원 교통환경연구팀, 성균관대학교 기계공학과) | Kyomin Choi
• 김태성(성균관대학교 기계공학과) | Taesung Kim
• 박덕신(한국철도기술연구원 교통환경연구팀) | Duckshin Park Corresponding author