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불포화 지반에서의 산사태 3차원 안정해석에 대한 사례연구

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Abstract
산사태에 대한 비탈면 안정해석시, 산지 비탈면의 경사와 지형의 변화가 심한 경우에는 엄밀한 해석으로 안정성을 평가해야 한다. 본 연구에서는 불포화층에서 강우로 인한 침투 현상을 해석하여 간극수압의 변동을 고려한 산사태 안정성 분석을 수행하였다. 비탈면 안정해석 시 실제 산사태가 발생한 지역을 선정하여 3차원 비탈면 안정해석을 수행하였고 무한비탈면 해석결과와 비교하였다. 세밀한 지반정보를 기반하여 3차원 비탈면 안정해석으로 지형에 따라 변동하는 산사태의 발생위치와 규모를 예측할 수 있다고 판단되었다.

In slope stability analysis for landslides, mountains have various slopes and geographical features, and hence it is necessary to estimate stability using rigorous analysis methods. In this study, after the analysis of infiltration behavior through unsaturated layers due to rainfall, the stability of landslide was estimated to account for the variation of pore water pressures. In the analysis of slope stability, a three-dimensional slope analysis was compared with an infinite slope analysis in a case study of terrain in which an actual landslideoccurred. In the three-dimensional slope stability analysis, it was found that the location of the failure and the failure area were predicted accurately based on the detailed geological information despite the variation of geographical features.
Author(s)
김성진오세붕유영근신호성
Issued Date
2022
Type
Article
Keyword
불포화토유효응력3차원해석산사태Unsaturated soilEffective stressThree-dimensional stability analysisLandslides
DOI
10.12652/Ksce.2022.42.3.0359
URI
https://oak.ulsan.ac.kr/handle/2021.oak/13347
Publisher
대한토목학회논문집(국문)
Language
한국어
ISSN
1015-6348
Citation Volume
42
Citation Number
3
Citation Start Page
359
Citation End Page
369
Appears in Collections:
Engineering > Engineering
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