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

Korean Geotechnical Society (한국지반공학회)
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Analysis of Seepage Behavior of Bottom Protection Layer by Filed Monitoring

계측관리를 통한 방조제 바닥보호공의 침투거동분석

  • Kang, Byung-Yoon (Productive Resources Research Division, Rural Research Institute, KRC) ;
  • Oh, Young-In (Research Group on Rural Natural Environment, Rural Research Institute, KRC) ;
  • Kim, Ki-Nyeon (Productive Resources Research Division, Rural Research Institute, KRC) ;
  • Kim, Hyun-Tae (Productive Resources Research Division, Rural Research Institute, KRC)
  • 강병윤 (한국농촌공사 농어촌연구원 생산자원연구소) ;
  • 오영인 (한국농촌공사 농어촌연구원 농촌자연환경연구소) ;
  • 김기년 (한국농촌공사 농어촌연구원 생산자원연구소) ;
  • 김현태 (한국농촌공사 농어촌연구원 생산자원연구소)
  • Published : 2008.10.10
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Abstract

In this research, mainly research about the structural and functional stability of sea dyke with variation of seepage condition after final closure. The piezometric head (water head in embankment) monitoring system was installed at two representative final closure section. The dredged fine sand filling condition was evaluated by in-situ test results. Also, the numerical analysis was performed to determine the permeability of bottom protection layer filled with dredged fine sand by monitoring results. According to numerical back analysis results, the coefficient of permeability of bottom protection section of is $7.6{\times}10^{-6}$ m/sec. These results are noted that the bottom protection layer of sea dyke was strong and intensively filled with dredged sand. Also, based on the seepage analysis, the seepage flux of this sea dyke was calculated about $2.42m^3$/day/m which is 29% decreased value compare with adjacent sea dyke.

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