한국환경복원기술학회지 (Journal of the Korean Society of Environmental Restoration Technology)

  • 제16권4호
  • /
  • Pages.15-26
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  • 2013
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  • 1229-3032(pISSN)
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  • 2733-5011(eISSN)
한국환경복원기술학회 (The Korea Society of Environmental Restoration Technology)
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수리모형을 이용한 호안녹화기반재의 수리적 안정성 분석

Stability Analysis of Green Revetment Media Using Hydraulic Model

  • 권효진 (상명대학교 대학원 환경자원학과) ;
  • 김성희 (상명대학교 대학원 환경자원학과) ;
  • 구본학 (상명대학교)
  • 투고 : 2013.04.15
  • 심사 : 2013.07.02
  • 발행 : 2013.08.31
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초록

In recent years, river maintenance projects using natural methods have been continuously implemented in urban areas and methods emphasizing ecology are being developed and constructed in revetment areas. However, there is insufficient technical review on the hydraulic stability of those revetment methods during the event of flood. Therefore, a hydraulic analysis is necessary for the stream where revetments are applied. This study was conducted to develop an objective test method for the hydraulic stability of green revetment media. For this purpose, hydraulic model tests were performed for the green base materials for revetments. Tests were conducted using experimental devices for the hydraulic model which were installed to simulate the rapid current during the flood. Loss of soil by the hydraulic condition was compared and analyzed with that of dry green revetment media, and the evaluations were made on the corrosion resistance, tractive force, and contractile force. Test results showed that green revetment media had higher corrosion resistance in non-vegetation condition compared to dry green revetment media, and the loss of base materials by the rooting of vegetation showed significant reduction by the vegetation. In addition, results of the allowable tractive force of the base material indicated it is relatively stable in vegetation condition but scouring can occur in non-vegetation condition. Therefore, the development of vegetation in revetment areas is anticipated to be effective for the stability of revetment areas by reducing external forces interacting with the corrosion resistance and stream bank. The green revetment media in expected to contribute to the stability of revetment areas.

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