유속 및 입경에 따른 조립토의 이동 및 퇴적 특성
Transport and Deposition Characteristics of Coarse Grained Soil According to the Flow Velocity and Grain Size
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초록
Dredging and land reclamation works has actively carried out for the efficient use of land and secure of agricultural and industrial site. During thereclamation, a portion of landfills are lost from the desired location due to a variety of causes. However, these causes has been rarely studied, and waterflow velocity has a great influence on the movement of landfills. For the economical and efficient reclamation, it is important to predict the movementof landfills in water. In this paper, an experimental study was carried out to investigate the deposition distance according to the flow velocity and soilgrain 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 depositiondistance increased with the flow velocity, and its relationship is shown linearly. For the grain size, the average deposition distance were drasticallyincreased as the grain size becomes smaller.
Abstract
Dredging and land reclamation works has actively carried out for the efficient use of land and secure of agricultural and industrial site. During thereclamation, a portion of landfills are lost from the desired location due to a variety of causes. However, these causes has been rarely studied, and waterflow velocity has a great influence on the movement of landfills. For the economical and efficient reclamation, it is important to predict the movementof landfills in water. In this paper, an experimental study was carried out to investigate the deposition distance according to the flow velocity and soilgrain 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 depositiondistance increased with the flow velocity, and its relationship is shown linearly. For the grain size, the average deposition distance were drasticallyincreased as the grain size becomes smaller.
참고문헌 (13)
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