Performance of geobarrier system under rainfall infiltration

Harianto Rahardjo, Nurly Gofar, Alfrendo Satyanaga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A Geobarrier system (GBS) is a retaining structure comprising geobags and utilizing capillary barrier principles to act as a protection of steep slope against rainfall-induce slope failures. Capillary barrier principles harness the distinct difference in unsaturated hydraulic properties between a fine-grained layer and a coarse-grained layer. In this study, the performance of GBS as a protection of a steep residual soil slope was investigated. The GBS was constructed using recycled materials and it was planted with vegetation to provide green cover and to blend in with the surrounding environment. Finite element analyses were carried out to evaluate the earth pressure and pore-water pressure variations within and behind the GBS slope during and after rainfall. Limit equilibrium analyses were performed at various stages during and after rainfall to assess the near vertical wall stability. The results of the deformation and seepage analyses showed that the reinforced zone in the GBS remained unsaturated during rainfall, indicating that the GBS slope performed well in minimizing the rainwater infiltration.

Original languageEnglish
Title of host publication11th International Conference on Geosynthetics 2018, ICG 2018
PublisherKorean Geosynthetics Society
Pages2917-2924
Number of pages8
ISBN (Electronic)9781713806080
Publication statusPublished - 2018
Externally publishedYes
Event11th International Conference on Geosynthetics 2018, ICG 2018 - Seoul, Korea, Republic of
Duration: Sep 16 2018Sep 21 2018

Publication series

Name11th International Conference on Geosynthetics 2018, ICG 2018
Volume4

Conference

Conference11th International Conference on Geosynthetics 2018, ICG 2018
CountryKorea, Republic of
CitySeoul
Period9/16/189/21/18

Keywords

  • Deformation
  • Geobag
  • GeoBarrier System
  • Geogrids
  • Pore-water pressure
  • Rainfall infiltration
  • Recycled material

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Environmental Engineering
  • Global and Planetary Change
  • Polymers and Plastics
  • Atmospheric Science

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