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Research Article

Seepage-Advection-Dispersion Numerical Analysis of Barrier System of Offshore Rubble Mound Revetment Landfill Under Steady Flow

정상류 조건에서 경사식호안 해상폐기물매립장의 차수에 대한 침투이류 분산해석

Woong-Ki Hwang1
,
Hyang-Eun Kim2
,
Tae-Hyung Kim3*
황 웅기1
,
김 향은2
,
김 태형3*
1Nonmember, Manager, Geo R&D Co., Ltd., 60 Centum jungang-ro, Haeundae-gu, Busan 48059, Republic of Korea
2Nonmember, Director, Geo R&D Co., Ltd., 60 Centum jungang-ro, Haeundae-gu, Busan 48059, Republic of Korea
3Member, Professor, Dept. of Civil Engrg., Korea Maritime and Ocean Univ., 727 Taejoung-ro, Yeongdo-gu, Busan 49112, Republic of Korea
* Corresponding Author
30 December 2019. pp. 97-106
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Abstract

본 연구는 오염원 유출을 방지하기 위한 경사식호안 해상폐기물매립장 차수시스템에 요구되는 적절한 기준을 제안하기 위하여 해석을 수행하였다. 차수시스템은 바닥과 측면으로 구성하였다. 바닥차수시스템은 불투수 점토층이 측면차수시스템은 HDPE 차수시트가 주 역할을 하고 부수적으로 중간보호층이 차수를 담당한다. SEEP/W와 CTRAN/W 프로그램을 이용하여 침투･이류 분산 해석을 실시하였다. 해석결과, 바닥차수시스템인 점토층에 대하여 요구되는 투수계수와 두께가 제안되었다. 측면차수시스템인 HDPE 차수시트에 대해서는 설치길이와 중간보호층에 대해서는 요구되는 투수계수가 제안되었다.

This study was conducted to propose a reasonable requirement regulation of barrier system of rubble mound revetment offshore landfill for preventing contaminant leakage. The barrier is composed with bottom layer and side barrier. The bottom layer was assumed as impermeable clay layer and side barrier was composed with HDPE sheet (primary element) and mid-protection layer (supplementary element). Seepage-advection-dispersion numerical analysis has been conducted using SEEP/W and CTRAN/W programs under steady flow. As the results, the minimum required barrier regulations for hydraulic conductivity and thickness of the bottom layer were suggested. For side barrier, the extended length of HDPE sheet and the hydraulic conductivity of mid-protection layer were also suggested.

Keywords
Offshore landfill
Barrier system
Bottom layer
HDPE sheet
Steady flow

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 18
  • No :4
  • Pages :97-106
  • Received Date : 2019-08-28
  • Revised Date : 2019-11-21
  • Accepted Date : 2019-11-25
  • DOI :https://doi.org/10.12814/jkgss.2019.18.4.097
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