Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2004.03b
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- Pages.606-613
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- 2004
A study on landslide charateristics by using the shear strength of the interface of rock and soil
암과 흙 경계면에서의 전단강도를 이용한 산사태 특성 연구
-
Lee, Su-Gon
(Dept. of Civil Engineering, Univ. of Seoul)
;
- Sun, Gun-Kyu (Engineer, Cheil Engineering Corp.) ;
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Lee, Chun-Young
(Korea Forest Research Institute(KFRI))
;
- Kim, Jae-Heun (Korea Forest Research Institute(KFRI)) ;
- Lee, Chang-No (Dept. of Civil Engineering, Univ. of Seoul)
- Published : 2004.03.25
Abstract
One of the major forces that causes landslide is the amount of underground water resulted from rainfall and shear strength. As a result of close study on the landslide area affected by typoon Rusa it is observed that many landslides took place at the interface of rock and soil. Based on this observation that shear strength at the interface played a great role in landslide of the hilly area, two shear strengths were measured on different places, one at the interface between rocks and soil and the other just on soil. The two values thus derived were compared and used to review the safety factor for the hilly areas already collapsed. Back analysis was also used to calculate the ground water table according to the different rock types at the time when degradation happened.