낙하 충격에 의한 풍화토의 비산먼지 발생 특성 분석
Analysis of dust emission characteristic by drop impact on decomposed granite soil
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초록
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 10μm (PM10) was measured by drop impact on paved soil with changing drop height, weight and drop size. Increasing drop height cause more PM10 emission. Increasing drop weight cause more PM10 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 PM10 emission aspect. Under limit perimeter, PM10 emission was increasing while perimeter was increasing, but over limit perimeter showed the opposite aspect. Regression equations for estimating PM10 with kinetic energy and perimeter were made under limit perimeter andover limit perimeter. The R2 of those equations were 0.784, 0.743. The error has occurred between measured PM10 and calculated PM10 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.
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 10μm (PM10) was measured by drop impact on paved soil with changing drop height, weight and drop size. Increasing drop height cause more PM10 emission. Increasing drop weight cause more PM10 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 PM10 emission aspect. Under limit perimeter, PM10 emission was increasing while perimeter was increasing, but over limit perimeter showed the opposite aspect. Regression equations for estimating PM10 with kinetic energy and perimeter were made under limit perimeter andover limit perimeter. The R2 of those equations were 0.784, 0.743. The error has occurred between measured PM10 and calculated PM10 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.
참고문헌 (15)
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