Investigation of Reducing Characteristics for the Spreading of Dredging Soil 

KEY WORDS : Spreading of dredging soil 준설토사의 확산, Silt protector 오탁방지막, Diffusion 확산, Contaminant 오염물질, Cohesive sediment 점착성토사, Noncohesive sediment 비점착성 토사

Namseeg Hong*
*Dept. of Civil Engineering, Donga University, Busan, Korea 

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.