Ecology and Resilient Infrastructure

Korean Society of Ecology and Infrastructure Engineering (응용생태공학회)
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Assessment of Levee Slope Reinforced with Bio-polymer by Image Analysis

영상분석을 통한 바이오폴리머로 보강된 제방사면 안정성 해석

  • Ko, Dongwoo (School of Constructional Disaster Prevention, Kyungpook National University) ;
  • Kang, Joongu (River Experiment Center, Korea Institute of Civil Engineering and Building Technology)
  • 고동우 (경북대학교 건설방재공학부) ;
  • 강준구 (한국건설기술연구원 하천연구센터)
  • Received : 2019.11.26
  • Accepted : 2019.12.09
  • Published : 2019.12.31
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Abstract

This study was conducted to apply natural river technologies to levees and examine the results. The new eco-friendly bio-polymer was applied, a combination of eco-friendly biopolymers and soil, to levee slope to enhance durability and eco-friendliness and to establish reinforcement measures against unstable levees due to overtopping. A semi-prototype levee of 1 m in height, 3 m in width, with a 1:2 slope and 5 m length, was constructed at the Andong River Experiment Center. The bio-soil mixed with the biopolymer and the soil at an appropriate ratio was treated with a 5 cm thickness on the surface of levee to perform the stability evaluation according to overtopping. Using the pixel-based analysis technique using the image analysis program, the breached area of levee slope was calculated over time. As a result, the time for complete decay occurs more than 12 times than that of ordinary soil levee. Therefore, when the new substance is applied to the surface of levee, the decay delay effect appears to be high.

이 연구는 자연에 기반을 둔 하천기술을 제방에 적용하여 그 효과를 평가하기 위해 수행되었다. 친환경 신소재 바이오폴리머를 제체 표면에 적용하여 내구성과 친환경성을 증진시킴과 동시에 월류에 대응하기 위한 제방의 보강 대책을 수립하고자 하였다. 안동하천연구센터에 현장토를 사용하여 높이 1 m, 마루 폭 3 m, 사면경사 1:2, 총 길이 5 m의 중규모 제방모형을 제작하였으며, 바이오폴리머와 흙을 적정 비율로 혼합한 바이오-소일 (bio-soil)을 제방 전면에 5 cm 두께로 도포하여 월류 발생에 대한 제방의 안정성 평가 실험을 수행하였다. 영상분석 프로그램을 이용한 픽셀기반 분석 기법을 적용하여 시간에 따른 제방사면의 붕괴면적을 산정하였으며 그 결과, 신소재 적용 제방의 경우 완전붕괴가 발생하는 시간은 일반 흙 제방에 비해 12배 이상 증가해서 붕괴지연효과가 상당히 높은 것으로 나타났다.

Keywords

References

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