岡山大学環境理工学部研究報告 ISSN 2187-6940
Published by Faculty of Environmental Science and Technology, Okayama University

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In situ determination of field-saturated hydraulic conductivity of subsurface soil of vadose zone by technique of Pressure Infiltrometer

河野 伊一郎 岡山大学
竹下 祐二 岡山大学
Mohammad Jafar Ali 岡山大学
抄録
For reducing or bridging gap between small scale laboratory investigations and large scale field investigations, a simple and portable model which is based on real situation and has a compatibility to laboratory core sampling, the pressure infiltrometer technique is introduced for determination of field-saturated hydraulic conductivity. The field -saturated hydraulic conductivity, K(FS), is obtained from measurements of steady flow rates applying constant head as well as falling head principle. The device is also used for field core sampling on which laboratory constant head as well as falling head tests is carried out. The field device is validated through comparison to laboratory core sample experiment and other existing methods. This paper describes first time a versatile field device representing good performance for in situ determination of hydraulic parameters in a short time.
キーワード
In-situ test
Field-saturated Hydraulic conductivity
Matric flux potential
Wetting front
3D-flow
ISSN
1341-9099
NCID
AN10529213