Bimodal and multimodal descriptions of soil-water characteristic curves for structural soils

Shiyu Liu, Noriyuki Yasufuku, Qiang Liu, Kiyoshi Omine, Hazarika Hemanta

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

Abstract

Many empirical models have been developed to describe soil-water characteristic curves (SWCCs). Unfortunately, few functions adequately describe SWCCs of structured soils. In the presented study, a bimodal and a multimodal SWCCs functions have been developed for the purpose of studying unsaturated water flow and solute transport in structured soils. The model involves two or multiple overlaying continua pore systems, the pore probability density functions of systems are assumed as lognormal distribution and them can be superposed to obtain the overall probability density function of the soil. The proposed functions are capable of simulating bimodal or multimodal SWCCs using parameters which can be related to physical properties of the structural soils. After verification, we conclude that proposed function fit bimodal SWCCs very well. These models can potentially be used as effective tools for indentifying hydraulic porosities in the structural medium.

Original languageEnglish
Title of host publication5th China-Japan Geotechnical Symposium
PublisherPeople's Communications Press
Pages241-248
Number of pages8
ISBN (Print)9787114105821
Publication statusPublished - Jan 1 2013
Event5th China-Japan Geotechnical Symposium: New Advances in Geotechnical Engineering - Chengdu, China
Duration: May 18 2013May 19 2013

Publication series

Name5th China-Japan Geotechnical Symposium

Other

Other5th China-Japan Geotechnical Symposium: New Advances in Geotechnical Engineering
CountryChina
CityChengdu
Period5/18/135/19/13

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All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

Cite this

Liu, S., Yasufuku, N., Liu, Q., Omine, K., & Hemanta, H. (2013). Bimodal and multimodal descriptions of soil-water characteristic curves for structural soils. In 5th China-Japan Geotechnical Symposium (pp. 241-248). (5th China-Japan Geotechnical Symposium). People's Communications Press.