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

Korean Geotechnical Society (한국지반공학회)
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Geoengineering Characteristics of the Cretaceous Rock Cut Slopes in Jinju area

진주지역 중생대 암반절토사면 지반특성

  • Kim, Seung-Hyun (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology) ;
  • Lee, Jung-Yup (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology) ;
  • Rhee, Jong-Hyun (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology) ;
  • Koo, Ho-Bon (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology)
  • 김승현 (한국건설기술연구원 지반연구부) ;
  • 이정엽 (한국건설기술연구원 지반연구부) ;
  • 이종현 (한국건설기술연구원 지반연구부) ;
  • 구호본 (한국건설기술연구원 지반연구부)
  • Published : 2006.03.24
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Abstract

The cut slopes in Jinju area constitute the Cretaceous Sedimentary rock which is one of the most poor ground conditions. The geological rocks of the cut slopes are correlated with Jinju Formation. Most of the rocks consist of Black Shale layer, but the lower parts consist of Alkorsic White Sandstone. So, It is characteristic of the differential weathering due to the difference of rock species. Moreover, vertical joints which concentrate on the released rock and weak rock fragments are accompanied with minor faults. We make out face mapping about each slopes through the detailed field-study and deduce RMR and SMR from the field data. The strength properties of rocks were obtained from references, indoor tests, and Back Analysis method. And, choosing properties were used in the stability analysis as stereographic projection and limit equilibrium analysis and we establish the countermeasures for the cut slopes.

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