E3S Web Conf.
Volume 9, 20163rd European Conference on Unsaturated Soils – “E-UNSAT 2016”
|Number of page(s)||6|
|Section||Water Transport Properties|
|Published online||12 September 2016|
Estimation of the empirical model parameters of unsaturated soils
1 INFRARES Laboratory, Civil engineering Department, Univ-SoukAhras, Algeria
2 LGCIE Laboratory, INSA - Lyon, France
3 Civil engineering Department, Univ-Boumerdes, Algeria
a Salima Bouchemella: email@example.com
For each flow modelling in the unsaturated soils, it is necessary to determine the retention curve and the hydraulic conductivity curve of studied soils. Some empirical models use the same parameters to describe these two hydraulic properties. For this reason, the estimation of these parameters is achieved by adjusting the experimental points to the retention curve only, which is more easily measured as compared with the hydraulic conductivity curve. In this work, we show that the adjustment of the retention curve θ (h) is not generally sufficient to describe the hydraulic conductivity curve K (θ) and the spatio-temporal variation of the moisture in the soil θ (z). The models used in this study are van Genuchten- Mualem model (1980-1976) and Brooks and Corey model (1964), for two different soils; Gault clay and Givors silt.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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