Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Transport and Deposition Characteristics of Coarse Grained Soil According to the Flow Velocity and Grain Size

유속 및 입경에 따른 조립토의 이동 및 퇴적 특성

  • Bong, Tae-Ho (Department of Rural Systems Engineering, Seoul National University) ;
  • Son, Young-Hwan (Department of Rural Systems Engineering, and Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Kim, Kyu-Sun (Samsung C&T Engineering & Construction Group) ;
  • Park, Jae-Sung (Department of Rural Systems Engineering, Seoul National University) ;
  • Kim, Dong-Geun (Department of Rural Systems Engineering, Seoul National University)
  • Received : 2015.11.09
  • Accepted : 2016.01.14
  • Published : 2016.01.30
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Abstract

Dredging and land reclamation works has actively carried out for the efficient use of land and secure of agricultural and industrial site. During the reclamation, a portion of landfills are lost from the desired location due to a variety of causes. However, these causes has been rarely studied, and water flow velocity has a great influence on the movement of landfills. For the economical and efficient reclamation, it is important to predict the movement of landfills in water. In this paper, an experimental study was carried out to investigate the deposition distance according to the flow velocity and soil grain size. We have made a large open-channel apparatus that can reproduce a laminar flow, and the deposition test was carried out on the four grain size (0.638, 1.425, 3.375, 7.125 mm) and four flow velocity (0.1, 0.3, 0.5, 0.67 m/s) with high definition video recording. As a results, average deposition distance increased with the flow velocity, and its relationship is shown linearly. For the grain size, the average deposition distance were drastically increased as the grain size becomes smaller.

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References

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