Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2008.10a
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- Pages.966-973
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- 2008
A Case Study on the Collapsed Cut-Slope in $\bigcirc\bigcirc$ detour at JeonranamDo
전라남도 $\bigcirc\bigcirc$ 우회도로 붕괴절토사면 사례 연구
- Kim, Seung-Hyun (Korea Institute of Construction and Technology) ;
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Koo, Ho-Bon
(Korea Institute of Construction and Technology) ;
- Lee, Jeong-Yeup (Korea Institute of Construction and Technology)
- Published : 2008.10.10
Abstract
In recent, the collapses of cut-slope is gradually increased due to the heavy rains accompanied by typhoon. Specially, many cut-slope failures and landslides was happened to Goheung, Yeosu, Suncheon region, Jeonranamdo in the middle of September 2007. The slope of investigation is width 20 m, height 22 m, and the circular failure was occurred. The parent rocks of the slope are pyroclastic rock, namely andesite, andesitic tuff et al. and the weathering grade is completely weathered to residual soils owing to rapid weathering process and has the existence of fault zone and mafic dyke. Also, lots of extension cracks are presented and the hydrologic condition is very deteriorated. As a result of the limit equilibrium analysis, the safety factor is 1.09(in dry season) and 0.64(in wet season). For the stabilization of the cut-slope, we decided to use the retaining wall, anchors and drainage apparatus.
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