Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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An Experimental Study on the Behavior of Capping Material by Sea Waves

파랑에 의한 피복재의 거동에 관한 실험적 연구

  • Kong, Jinyoung (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Kim, Youngtak (River and Coastal Research Division, Korea Institute of Construction Technology) ;
  • Kang, Jaemo (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Lee, Jangguen (Geotechnical Engineering Research Division, Korea Institute of Construction Technology)
  • Received : 2014.04.28
  • Accepted : 2014.06.17
  • Published : 2014.07.01
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Abstract

In-situ capping is a method to stabilize contaminated sediments by isolation. Few researches on the in-situ capping have been performed, although the engineering approach is still required to prevent the release of contaminants. In this study, hydraulic model test were conducted by using a wave generator to observe the change of cap thickness which is important factor in design of capping. Sands with particle size between 0.075 to 2 mm as capping materials were used to observe the change of capping thickness by waves. The experimental results show that the surface of capping materials is similar to wave form. The more wave height increases, the more erosion of capping materials increases.

피복공법은 해저 퇴적오염물질을 차단하고 안정화시켜 처리하는 방안이다. 국내에서는 피복공법에 대한 연구가 부족하나, 오염물질이 방출되지 않기 위한 공학적 접근법이 반드시 필요하다. 본 연구에서는 피복설계 시 중요 인자인 피복재 침식을 확인하기 위해 조파장치를 이용한 수리모형실험을 실시하였다. 1:10의 실험축척을 적용하여 0.07~2 mm 크기의 모래를 피복 재료로 사용하였고, 모형 수조 내 강사한 후 파랑을 발생시켜 피복재의 형상변화를 관측하였다. 실험결과, 피복재의 표면은 파랑의 파형과 유사하게 변형이 발생하였으며, 파랑의 파고가 증가할수록 대체적으로 침식되는 피복재의 깊이가 증가하였다.

Keywords

References

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