Chapter
Apr 26, 2012
Unsaturated Hydraulic Conductivity for Upward Flow in Soil
Authors: V. Sriboonlue [email protected] and Groundwater Research Center, Faculty of Technology, Khon Kaen University, Thailand 40002., K. Srisuk, S. Konyai, and N. KhetkratokAuthor Affiliations
Publication: Unsaturated Soils 2006
Abstract
A method for direct measurement of hydraulic conductivity of unsaturated soil is presented. The method is based on a system of capillary flow from a controlled water table up into a soil column in initially air-dry condition. By measurement of change in soil water content at a known vertical position from the water table, together with a prepared soil water retention curve, the unsaturated hydraulic conductivity K(θ) can be calculated. The calculation is based on Darcy's Law and continuity equation. The proposed method was tested with 6 soil samples and compared with the indirect methods of van Genuchtent and Gardner. The results of K-θ relationships show linear trends in semilog scale in a form of K = ceaθ where a and c are parameters.
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Published In
Unsaturated Soils 2006
Pages: 1503 - 1512
Copyright
© 2006 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Engineering fundamentals
- Flow (fluid dynamics)
- Flow measurement
- Fluid dynamics
- Fluid mechanics
- Geomechanics
- Geotechnical engineering
- Groundwater
- Hydraulic conductivity
- Hydrologic engineering
- Hydrologic properties
- Hydrology
- Laboratory tests
- Measurement (by type)
- Soil mechanics
- Soil properties
- Soil water
- Soils (by type)
- Tests (by type)
- Unsaturated flow
- Unsaturated soils
- Water (by type)
- Water and water resources
- Water content
- Water management
- Water table
Authors
Affiliations
V. Sriboonlue [email protected] and Groundwater Research Center, Faculty of Technology, Khon Kaen University, Thailand 40002.
Department of Agricultural Engineering, Faculty of Engineering, Khon Kaen University, Thailand 40002.E-mail: [email protected] and Groundwater Research Center, Faculty of Technology, Khon Kaen University, Thailand 40002.
K. Srisuk
Department of Geotechnology, Faculty of Technology, Khon Kaen University, Thailand 40002 and Groundwater Research Center, Faculty of Technology, Khon Kaen University, Thailand 40002.
S. Konyai
Groundwater Research Center, Faculty of Technology, Khon Kaen University, Thailand 40002 and Department of Land Resources and Environment, Faculty of Agriculture, Khon Kaen University, Thailand 40002
N. Khetkratok
Groundwater Research Center, Faculty of Technology, Khon Kaen University, Thailand 40002
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