Instability analysis of rainfall-induced landslides using hydro-mechanically coupled model

Yongmin Kim, Sangseom Jeong, Kwangwoo Lee

Research output: Contribution to conferencePaper

Abstract

In this study, the instability of rainfall-induced shallow landslides on Mt. Umyeonsan was examined by a coupled hydro-mechanical finite element (FE) model. Field and laboratory investigations were performed to explore mechanisms of shallow landslides and to determine the model parameters. The coupled hydro-mechanical FE model is shown to be capable of simulating the progressive failure of a slope within the soil layer. The slope failures occurred on the surficial layer-bedrock interface, which shows good agreement with the actual failure zone. Through comparisons with field investigations, the presented method reasonably identified the potential zone of landslide initiation as compared with a limit equilibrium method. Therefore, the coupled simulation allows both the hydraulic and mechanical behavior of slope to be considered and realistically modelled.

Original languageEnglish
Pages1002-1007
Number of pages6
DOIs
Publication statusPublished - 2015 Jan 1
Event15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015 - Fukuoka, Kyushu, Japan
Duration: 2015 Nov 92015 Nov 13

Other

Other15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015
CountryJapan
CityFukuoka, Kyushu
Period15/11/915/11/13

Fingerprint

landslides
Landslides
Rain
landslide
rain
rainfall
slope failure
bedrock
fluid mechanics
Hydraulics
hydraulics
Soils
methodology
simulation
analysis
soil
method

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Soil Science

Cite this

Kim, Y., Jeong, S., & Lee, K. (2015). Instability analysis of rainfall-induced landslides using hydro-mechanically coupled model. 1002-1007. Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan. https://doi.org/10.3208/jgssp.KOR-07
Kim, Yongmin ; Jeong, Sangseom ; Lee, Kwangwoo. / Instability analysis of rainfall-induced landslides using hydro-mechanically coupled model. Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan.6 p.
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Kim, Y, Jeong, S & Lee, K 2015, 'Instability analysis of rainfall-induced landslides using hydro-mechanically coupled model', Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan, 15/11/9 - 15/11/13 pp. 1002-1007. https://doi.org/10.3208/jgssp.KOR-07

Instability analysis of rainfall-induced landslides using hydro-mechanically coupled model. / Kim, Yongmin; Jeong, Sangseom; Lee, Kwangwoo.

2015. 1002-1007 Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan.

Research output: Contribution to conferencePaper

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AB - In this study, the instability of rainfall-induced shallow landslides on Mt. Umyeonsan was examined by a coupled hydro-mechanical finite element (FE) model. Field and laboratory investigations were performed to explore mechanisms of shallow landslides and to determine the model parameters. The coupled hydro-mechanical FE model is shown to be capable of simulating the progressive failure of a slope within the soil layer. The slope failures occurred on the surficial layer-bedrock interface, which shows good agreement with the actual failure zone. Through comparisons with field investigations, the presented method reasonably identified the potential zone of landslide initiation as compared with a limit equilibrium method. Therefore, the coupled simulation allows both the hydraulic and mechanical behavior of slope to be considered and realistically modelled.

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Kim Y, Jeong S, Lee K. Instability analysis of rainfall-induced landslides using hydro-mechanically coupled model. 2015. Paper presented at 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan. https://doi.org/10.3208/jgssp.KOR-07