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

Korean Geotechnical Society (한국지반공학회)
권호 표지

Generation Characteristics and Prediction of Acid Rock Drainage(ARD) of Road Cut Slopes

건설현장 절취사면의 산성배수 발생특성과 잠재적 산발생능력 평가

  • Lee, Gyoo-Ho (Geological and Environmental Hazards Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Kim, Jae-Gon (Geological and Environmental Hazards Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Lee, Jin-Soo (Geological and Environmental Hazards Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Chon, Chul-Min (Groundwater & Geothermal Resources Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Park, Sam-Gyu (Geotechnical Engineering Divison, Korea Institute of Geoscience & Mineral Resources)
  • 이규호 (한국지질자원연구원 지질환경재해연구부) ;
  • 김재곤 (한국지질자원연구원 지질환경재해연구부) ;
  • 이진수 (한국지질자원연구원 지질환경재해연구부) ;
  • 전철민 (한국지질자원연구원 지하수지열연구부) ;
  • 박삼규 (한국지질자원연구원 지반안전연구부)
  • Published : 2005.03.25
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Abstract

Acid Rock Drainage(ARD) is the product formed by the atmospheric(i.e. by water, oxygen and carbon dioxide) oxidation of the relatively common iron-sulphur minerals pyrite($FeS_2$). ARD causes the acidification and heavy metal contamination of water and soil and the reduction of slope stability. In this study the generation characteristics and the prediction of ARD of various road cut slopes were studied. An attempt to classify the rocks into several groups according to their acid generation potentials was made. Acid Base Accounting(ABA) tests, commonly used as a screening tool in ARD predictions, were performed. Sixteen rock samples were classified into PAF(potentially acid forming) group and four rock samples into NAF(non-acid forming) group. The chemical analysis of water samples strongly suggested that ARD with high content of heavy metals and low pH could pollute the ground water and/or stream water.

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