한국해양환경ㆍ에너지학회지 (Journal of the Korean Society for Marine Environment & Energy)

  • 제19권2호
  • /
  • Pages.137-143
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  • 2016
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  • 2288-0089(pISSN)
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  • 2288-081X(eISSN)
한국해양환경•에너지학회 (The Korean Society for Marine Environment and Energy)
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제주도 차귀도 서북쪽 해역 내 퇴적 환경 및 퇴적물 조사

Survey of Sedimentary Environment and Sediment at the West-Northern Site of Chagwi-do nearby Jeju Island

  • 김한수 (제주대학교 해양시스템공학과) ;
  • 현종우 (블루코리아 이노베이션) ;
  • 김창수 (제주대학교 해양시스템공학과) ;
  • 김정록 (제주대학교 해양시스템공학과) ;
  • 조일형 (제주대학교 해양시스템공학과)
  • Kim, Hansoo (Department of Ocean System Engineering, Jeju National University) ;
  • Hyeon, Jong-Wu (Blue Korea Innovation Ltd.) ;
  • Jin, Changzhu (Department of Ocean System Engineering, Jeju National University) ;
  • Kim, Jeongrok (Department of Ocean System Engineering, Jeju National University) ;
  • Cho, Il-Hyoung (Department of Ocean System Engineering, Jeju National University)
  • 투고 : 2016.02.04
  • 심사 : 2016.05.11
  • 발행 : 2016.05.25
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초록

10 MW급 부유식 파력-해상풍력 복합발전 플랫폼의 석션 매립 앵커 시스템 설계를 위하여 제주도 차귀도 서북쪽 인근해역에서 퇴적 환경 및 퇴적물 성분 조사를 수행하였다. Chirp III을 이용하여 획득한 탄성파 단면도를 Chough et al.[2002]의 분류 방법에 따라 음향상 분류를 수행하였다. 그 결과, 조사 해역내의 중앙 및 서북부 지역에서는 주로 편평한 해저면 아래 두께 5~15 m의 내부 반사층이 존재하는 Type I-3으로 확인되었다. 반면 동남부 지역에서는 표층 반사 신호가 상대적으로 큰 Type I-1, I-2 그리고 III-1로 확인되었다. 또한 8개의 대표 정점에서 채취한 시료에 대하여 5종류의 물리적 시험(단위중량, 함수비, 입도분석, 액성 및 소성 한계, 비중)을 수행한 결과 조사 해역 내에는 모래(SP)와 실트가 섞인 모래(SM) 그리고 SP-SM이 혼합된 퇴적물이 존재함을 확인하였다.

The sedimentary environment and sediment were surveyed at the West-Northern site of Chagwi-do nearby Jeju Island for the design of the embedded suction anchor system of 10 MW-class floating wave-offshore wind hybrid power generation system. According to the classification scheme of Chough et al.[2002], the echo type of the seismic profiles using the chirp III was classified. As a results, the center and west-northern area of survey site were proved to be type I-3 where subbottom layer with thickness 5~15 m exists under the flat seafloor. On the other hands, the east-southern area were regarded to be type I-1, I-2 and III-1 where seafloor reflection is much stronger than type I-3. Also, the physical tests (unit weight, moisture content, grain size, liquid limit, specific gravity) were performed with samples taken from 8 fixed locations. It is found that the sand (SP), the sand blended with silt (SM) and the mixture of SP-SM are distributed uniformly on the survey area.

키워드

참고문헌

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피인용 문헌

  1. Survey of Seafloor at Chagwi-do of Jeju Island to Select 60-m-class Sea Test Bed of Wave Energy Converter vol.31, pp.4, 2017, https://doi.org/10.26748/KSOE.2017.08.31.4.308