Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Analysis of dust emission characteristic by drop impact on decomposed granite soil

낙하 충격에 의한 풍화토의 비산먼지 발생 특성 분석

  • 민슬기 (서울대학교 생태조경.지역시스템공학부 대학원) ;
  • 손영환 (서울대학교 조경.지역시스템공학과) ;
  • 박재성 (서울대학교 생태조경.지역시스템공학부 대학원) ;
  • 노수각 (서울대학교 생태조경.지역시스템공학부 대학원) ;
  • 봉태호 (서울대학교 생태조경.지역시스템공학부 대학원)
  • Received : 2014.04.23
  • Accepted : 2014.05.08
  • Published : 2014.05.31
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Abstract

Dust is mostly caused by human activity. The effect of natural factors on dust emission were studied in many research, but the little effort in researching artificial factors of dust emission. The object of study is to analysis dust emission characteristic by drop impact. Particle matter $10{\mu}m$ ($PM_{10}$) was measured by drop impact on paved soil with changing drop height, weight and drop size. Increasing drop height cause more $PM_{10}$ emission. Increasing drop weight cause more $PM_{10}$ emission but had limit weight for increasing dust emission. Because the exceed kinetic energy of drop weight penetrate the soil surface. The limit perimeter was exist that separating $PM_{10}$ emission aspect. Under limit perimeter, $PM_{10}$ emission was increasing while perimeter was increasing, but over limit perimeter showed the opposite aspect. Regression equations for estimating $PM_{10}$ with kinetic energy and perimeter were made under limit perimeter and over limit perimeter. The $R^2$ of those equations were 0.784, 0.743. The error has occurred between measured $PM_{10}$ and calculated $PM_{10}$ in the equation under limit perimeter. But using equation of case for over limit perimeter, PM10 can be estimated with kinetic energy and drop perimeter.

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References

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