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

Korean Geotechnical Society (한국지반공학회)
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A Study on the Stability Evaluation of Soil Slope according to inclination of upper Natural Slope

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  • Lee, Jeong-Yeob (Geotechnical Engineering Research Department, Korea Institute of Construction Technology) ;
  • Kim, Jin-Hwan (Geotechnical Engineering Research Department, Korea Institute of Construction Technology) ;
  • Lee, Jong-Hyun (Geotechnical Engineering Research Department, Korea Institute of Construction Technology) ;
  • Gu, Ho-Bon (Geotechnical Engineering Research Department, Korea Institute of Construction Technology)
  • 이정엽 (한국건설기술연구원 지반연구부) ;
  • 김진환 (한국건설기술연구원 지반연구부) ;
  • 이종현 (한국건설기술연구원 지반연구부) ;
  • 구호본 (한국건설기술연구원 지반연구부)
  • Published : 2004.03.25
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Abstract

The purpose of this study is the stability evaluation of soil slope according to inclination of upper natural slope. Upper natural slope breeds loss of slope by inflow in slope of surface water by rainfal1 and f1uctuation of amount of materials in slope through method of cutting slope according to degree of inclination. Basis of standard inclination does not consider of inclination of upper natural slope and is presented uniformly. Therefore, in this study, analyzed stability of inclination of upper natural slope through limit equilibrium analysis. Result is same as following. First, safety factor through limit equilibrium analysis is almost direct decrease when gradient of soil slope is 1:1.2, 1:1.5. However, when gradient of soil slope is 1:1.0, 1:0.7, if sinclination of upper natural slope are $20^{\circ}$, it shows tendency that decrease of safety factor becomes low rapidly. Second, when when gradient of soil slope is fixed, inclination of upper natural slope increase tendency(maximum 3.0 times) that decrease of safety factor.

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