Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Sensitivity Analysis of Soil Properties for the Slope Safety Factor in Embankments utilized Bottom Ash and Dredged Soil Mixture

바텀 애쉬와 준설 혼합토 적용 제체의 사면 안전율에 대한 토질 정수 민감도 분석

  • Noh, Soo-Kack (Research Institute for Agriculture & Life Sciences, Seoul National University) ;
  • Son, Young-Hwan (Department of Rural Systems Engineering and Research Institute for Agriculture & Life Sciences, Seoul National University) ;
  • Park, Jae-Sung (Department of Rural Systems Engineering, Seoul National University) ;
  • Bong, Tae-Ho (Research Institute for Agriculture & Life Sciences, Seoul National University)
  • Received : 2014.10.20
  • Accepted : 2014.01.12
  • Published : 2015.01.30
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Abstract

In the construction industry, the interest for recycling aggregates is rising as more people demand for alternatives due to lack of supply of natural aggregates and environmental problems. However, in order for recycled aggregates to be used in infrastructures, stability and other factors need to be verified. Therefore, the objective of this study is to analyze the sensitivity of soil properties to secure slope safety according to various heights of embankment when bottom ash and dredged soil mixture is applied in the embankment. In most cases, all heights were safe for the slide for the embankment whether the water level is full or sudden draw down. The result of the sensitivity analysis revealed that the unit weight of embankments is highest among all factors to be considered. However, the sensitivity of the unit weight became smaller and the sensitivity of the friction angle of embankments increased with the height of embankments. The sensitivity of factors of core materials is very small because the core has weaker physical properties than those of the embankment. The effect of the height for each factor is different for each slope and water levels. The sensitivity of the unit weight of embankments is most affected when the height is 60m in the upstream slope. To conclude, bottom ash and dredged soil mixture can be applied in the embankment and different factors must be considered in different scale because the sensitivity depends highly on the height of embankments.

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References

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