Investigation of Reducing Characteristics for the Spreading of Dredging Soil and the Diffusion of Contaminant by Silt Protector Curtain through Three Dimensional Numerical Model Experiment

J. Ocean Eng. Technol. 2010;24(4):78-85.

Hong Nam-Seeg

Dept. of Civil Engineering Donga University

3차원 수치모형실험을 통한 오탁방지막의 오염물질 및 준설토 확산 저감특성 조사

홍남식

동아대학교 토목공학과

Keywords: Spreading of dredging soil, Silt protector, Diffusion, Contaminant, Cohesive sediment, Noncohesive sediment

핵심용어: 준설토사의 확산, 오탁방지막, 확산, 오염물질, 점착성토사, 비점착성 토사

Abstract

This study investigates reducing characteristics for the spreading of dredged soil and the diffusion of contaminant by silt protector curtain through three dimensional numerical experiment. The numerical medel is modified by combining the sediment transport characteristics for cohesive sediment into the previously developed model. Several numerical experiments have been given in order to investigate the reducing effect of silt protector using two dimensional numerical channel model under various parameters such as upstream flow velocity, depth of silt curtain and the position of dumped materials. Through the evaluation of several simulation results, we knew that the careful design has to be given in the determination of depth and position of silt protector.