Modeling of shallow landslides in an unsaturated soil slope using a coupled model

Yongmin Kim, Sangseom Jeong

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


This paper presents a case study and numerical investigation to study the hydro-mechanical response of a shallow landslide in unsaturated slopes subjected to rainfall infiltration using a coupled model. The coupled model was interpreted in details by expressing the balance equations for soil mixture and the coupled constitutive equations. The coupled model was verified against experimental data from the shearing-infiltration triaxial tests. A real case of shallow landslide occurred on Mt. Umyeonsan, Seoul, Korea was employed to explore the influence of rainfall infiltration on the slope stability during heavy rainfall. Numerical results showed that the coupled model accurately predicted the poromechanical behavior of a rainfall-induced landslide by simultaneously linking seepage and stress-strain problems. It was also found that the coupled model properly described progress failure of a slope in a highly transient condition. Through the comparisons between the coupled and uncoupled models, the coupled model provided more realistic analysis results under rainfall. Consequently, the coupled model was found to be feasible for the stability and seepage analysis of practical engineering problems.

Original languageEnglish
Pages (from-to)353-370
Number of pages18
JournalGeomechanics and Engineering
Issue number2
Publication statusPublished - 2017 Aug

Bibliographical note

Publisher Copyright:
© 2017 Techno-Press, Ltd.

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology


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