DEVELOPMENT OF SEDIMENT TRANSPORT ANALYSIS METHOD FOR SUBMERGED BREAKWATER IN TOMAKOMAI PORT

Abstract

 In TOMAKOMAI Port West District, the sedimentation of channel is an important problem. However, it is necessary to consider the effect of calmness for sand transport countermeasures, since there is also a problem of tranquility due to long-period waves. For this reason, we investigated countermeasures using a submerged breakwater with a small reflected wave. It is important to accurately model the sediment transport behavior around the submerged breakwater with a multi-layer model, since the suspended sediments partially pass with the flow on the submerged breakwater. Therefore, in this study, develop an evaluation model of the flow and the SS around the submerged breakwater, after reproducing the flow and SS of the field observation. Next, using this model, we clarified the effect of submerged breakwater on reducing sand drift.