Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Analysis on underwater stability of the octagonal pillar type fish cage and mooring system

팔각기둥형 가두리 시스템의 수중 안정성 분석

  • Yang, Yong-Su (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • Park, Seong-Wook (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • Lee, Kyounghoon (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • Lee, Dong-Gil (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • Jeong, Seong-Jae (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • Bae, Jaehyun (Aquaculture Industry Division, East Sea Fisheries Research Institute)
  • 양용수 (국립수산과학원 시스템공학과) ;
  • 박성욱 (국립수산과학원 시스템공학과) ;
  • 이경훈 (국립수산과학원 시스템공학과) ;
  • 이동길 (국립수산과학원 시스템공학과) ;
  • 정성재 (국립수산과학원 시스템공학과) ;
  • 배재현 (동해수산연구소 해역산업과)
  • Received : 2014.04.14
  • Accepted : 2014.05.23
  • Published : 2014.05.31
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Abstract

The sea cage in marine aquaculture might be varied such as on the stability and shape in the open sea by environmental factors. To evaluate the stability of net cage structures in the open sea, the physical and numerical modeling techniques were applied and compared with field observations. This study was carried out to analyse the stability and the volume loss which would have an effect on the fish swimming behavior in the octagonal pillar type fish cage under the open sea. As a results, the volume loss ratio of the fish cage as measured using a depth sensor was indicated a value of the 30.3% under the current velocity (1.1m/s). The fish cage should be consisted of a concrete block with a weight over 10 tons, a mooring rope diameter over 28mm PP, and a shackle of 25mm under the current speed of 1m/sec for reasonable stability.

Keywords

References

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