Evaluation of capillary barrier system under lateral non-flow condition of sand layer

Byeong Su Kim, Yuji Takeshita, Seong Wan Park, Shoji Kato

Research output: Contribution to conferencePaper

Abstract

In recent years, ground disasters such as a collapse of river levee due to infiltration and erosion of rainwater during heavy rain have frequently been occurred. As one solution to that, a capillary barrier (CB) system could be adopted. All of the laboratory model test for the CB in the past researches have been carried out under the lateral flow condition of the sand layer, and its performance from the results has been evaluated. But, when the sand layer changes to impermeable state due to some reasons such as the penetration of fine grained soil, the performance of the CB would be degraded. Thus, this study focuses on the laboratory model test for the CB under lateral non-flow condition. A series of laboratory model tests of the CB under lateral non-flow condition were performed according to the rainfall conditions of 3 patterns of I=20, 50, 100 mm/hr. In addition, the division lengths obtained from the model tests were examined with the results of the infiltration analysis.

Original languageEnglish
Publication statusPublished - 2019
Event7th Asia-Pacific Conference on Unsaturated Soils, AP-UNSAT 2019 - Nagoya, Japan
Duration: Aug 23 2019Aug 25 2019

Conference

Conference7th Asia-Pacific Conference on Unsaturated Soils, AP-UNSAT 2019
CountryJapan
CityNagoya
Period8/23/198/25/19

Keywords

  • Capillary barrier
  • Division length
  • Infiltration analysis
  • Laboratory model test
  • Lateral non-flow condition

ASJC Scopus subject areas

  • Soil Science

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  • Cite this

    Kim, B. S., Takeshita, Y., Park, S. W., & Kato, S. (2019). Evaluation of capillary barrier system under lateral non-flow condition of sand layer. Paper presented at 7th Asia-Pacific Conference on Unsaturated Soils, AP-UNSAT 2019, Nagoya, Japan.