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Long-term performance of a three-layer capillary barrier cover system in humid climates

  • Jian Liu*
  • , Yuedong Wu
  • , Rui Chen
  • , C. W.W. Ng
  • *Corresponding author for this work
  • Hohai University
  • Harbin Institute of Technology Shenzhen
  • Hong Kong University of Science and Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

An innovative three-layer (silt/gravelly sand/clay) capillary barrier cover system has recently been proposed for minimizing rainfall infiltration in humid climates. Its performance has been preliminarily verified by both physical and numerical modelling subjected to a short extreme rainfall. However, the long-term performance of this three layer cover system is not yet clear in humid climates, such as Hong Kong and Singapore, where an annual rainfall of over 2000 mm is expected. In this study, the long-term feasibility and effectiveness of this three-layer cover system are investigated. A series of numerical simulations were carried out based on a calibrated numerical model. It was found that the long-term feasibility and effectiveness of this three-layer cover system are investigated. A series of numerical simulations were carried out based on a calibrated numerical model even ks in the clay layer increases to 5 × 10−9 m/s due to the occurrence of cracks, the long-term effectiveness of the three-layer cover system on preventing water into the waste is still satisfactory.

Original languageEnglish
Title of host publicationSpringer Series in Geomechanics and Geoengineering
EditorsWei Wu, Hai-Sui Yu
PublisherSpringer Verlag
Pages1278-1281
Number of pages4
ISBN (Print)9783319971148
DOIs
StatePublished - 2018
Externally publishedYes
EventChina-Europe Conference on Geotechnical Engineering, 2016 - Vienna, Austria
Duration: 13 Aug 201616 Aug 2016

Publication series

NameSpringer Series in Geomechanics and Geoengineering
ISSN (Print)1866-8755
ISSN (Electronic)1866-8763

Conference

ConferenceChina-Europe Conference on Geotechnical Engineering, 2016
Country/TerritoryAustria
CityVienna
Period13/08/1616/08/16

Keywords

  • Capillary barrier
  • Landfill
  • Long term performance
  • Water infiltration

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