Inverse analysis of in situ permeability test data for determining unsaturated soil hydraulic properties

Content Provider	Scilit
Author	Takeshita, Y. Yagi, K. Morii, T. Inoue, M.
Copyright Year	2020
Description	A new field experimental method of determining unsaturated soil hydraulic properties is proposed. In this method these properties are assumed to be represented by van Genuchten's closed-form expressions. Unknown parameters of this model are identified by Genetic algorithms (GA) incorporating finite element analysis of transient axisymmetric seepage flow. GA are search algorithms based on the mechanics of natural selection and natural genetics. They have become a popular global optimization method. A ponded single-ring infiltrometer technique, such as the Guelph Pressure Infiltrometer is performed. Simultaneously the measured change of soil water content with time and cumulative inflow data are used to identify unsaturated soil hydraulic function parameters. The advantage of the proposed method are that it allows estimation of the unsaturated soil hydraulic parameters and diminishes experimental time. The utility of our proposed method is demonstrated by using experimental data for Japanese dune sand. Book Name: Unsaturated Soils for Asia
Related Links	https://api.taylorfrancis.com/content/chapters/edit/download?identifierName=doi&identifierValue=10.1201/9781003078616-76&type=chapterpdf
Ending Page	449
Page Count	5
Starting Page	445
DOI	10.1201/9781003078616-76
Language	English
Publisher	Informa UK Limited
Publisher Date	2020-09-10
Access Restriction	Open
Subject Keyword	Book Name: Unsaturated Soils for Asia Environmental Engineering Unsaturated Soil Hydraulic Infiltrometer Optimization Function
Content Type	Text
Resource Type	Chapter