Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Development of New Type of Submerged Breakwater for Reducing Mean Water Level behind Structure

배후수위 저감효과를 가진 신기능 잠제의 개발

  • Hur, Dong-Soo (Department of Ocean Civil Engineering, Gyeongsang National University) ;
  • Lee, Woo-Dong (Institute of Marine Industry, Gyeongsang National University) ;
  • Goo, Nam-Heon (LNG/Plant Civil Department, Dasan Consultants Co. Ltd.) ;
  • Jeon, Ho-Seong (Hydro science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Jeong, Yeon-Myeong (Department of Ocean Civil Engineering, Gyeongsang National University)
  • 허동수 (국립경상대학교 해양토목공학과) ;
  • 이우동 (국립경상대학교 해양산업연구소) ;
  • 구남헌 ((주)다산컨설턴트 특수사업부) ;
  • 전호성 (한국건설기술연구원 수자원 하천연구소) ;
  • 정연명 (국립경상대학교 해양토목공학과)
  • Received : 2016.12.30
  • Accepted : 2017.04.20
  • Published : 2017.04.30
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Abstract

Typically, a submerged breakwater is one of the good scene-friendly coastal structures used to reduce wave energy and coastal erosion. However, sometimes, a submerged breakwater also has a negative aspect in that a strong rip current occurring around an open inlet due to a difference in mean water levels on the front and rear sides of the structure leads to scouring. Such scouring has a bad effect on its stability. In order to eliminate this kind of demerit, this study investigated four new types of submerged breakwaters with drainage channels. First, hydraulic experiments were performed the typical and new structures. Then, the wave height and mean water level distributions around the structures were examined using the experimental results. Finally, it was revealed that the new type of submerged breakwater could efficiently reduce the mean water level on its rear side. In particular, in the case of new-type submerged breakwater 2, an average reduction efficiency of 71.2% for the difference between the mean water levels at the front and rear sides was shown in comparison with the typical one.

Keywords

References

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