Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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A Study on Feasibility of Surface Wave Application for the Assessment of Physical Properties of Dam

표면파 적용 댐체 물성 조사 타당성 연구

  • Kim, Hyoung-Soo (Groundwater and Geotechnics Research Center, Korea Institute of Water and Environment, KOWACO) ;
  • Min, Dong-Ju (Marine Geoenvironments and Resources Research Division, KORDI) ;
  • Kim, Jung-Yul (Soam Consultant Co., Ltd.) ;
  • Ha, Ik-Soo (Groundwater and Geotechnics Research Center, Korea Institute of Water and Environment, KOWACO) ;
  • Oh, Suk-Hoon (Dam Safety Research Center, Korea Institute of Water and Environment, KOWACO)
  • 김형수 (한국수자원공사 수자원연구원 지하수지반연구소) ;
  • 민동주 (한국해양연구원, .해저환경자원연구본부) ;
  • 김중열 ((주)소암컨설턴트) ;
  • 하익수 (한국수자원공사 수자원연구원 지하수지반연구소) ;
  • 오석훈 (한국수자원공사 수자원연구원 댐안전연구소)
  • Published : 2005.03.25
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Abstract

Three dimensional finite difference elastic wave model was developed to estimate the feasibility of surface wave applications in geotechnical problems. The wave motions calculated by the developed program in this study shows good agreement with well known analytic solutions. The surface wave motions calculated from layered dam type structure can be interpreted as a infinite layer structure using dispersion curve but it is need a special source of which high energy in frequency band lower than 10 Hz to get information of physical properties in few tens meter deep. The source which has high energy in the low frequency band, however, can give defect on dam and this will make some limitation in real field applications. The dispersion curves calculated from the surface wave motion of homogeneous and center core type dam models will give rise to fatal errors if the conventional infinite layer structure used in their interpretation because the surrounding materials and boundaries of dam make some distortion in dispersion curve of surface wave. So it is strongly recommended to use three dimensional inversion model for correct interpretation and estimation of physical properties of dam materials.

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