Measurements of unsaturated hydraulic conductivity of snow.
Journal of the Japanese Society of Snow and Ice, 2000 積雪中の水の移動を知る上でもっとも重要なパラメータである不飽和透水係数を, しまり雪 (平均粒径0.5mm, 平均密度530kg/m3) および中ざらめ雪 (1.3mm, 620kg/m3) と大ざらめ雪 (1.7mm, 610kg/m3) の3種類の雪について実験室で測定した.実験は, 0℃の恒温槽内にて, 水の流下フラックスを一定にする「フラックス制御型定常法」によって行った.積雪中の水の負圧 (サクション : h) と流下フラックスから, 不飽和透水係数Kとサクションhの関係K (h) を求めた.次に水分特性 (サクションと含水率の関係) の測定結果を用い, 不飽和透水係数と重量含水率θwの関係K (θw) に変換した.その結果, 不飽和透水係数Kは ...
SUGIE, Shinsuke, NARUSE, Renji
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Estimation of Hydraulic Conductivity of Saturated and Unsaturated Soils Measured by Two Methods of Tillage Corn in Summer in the Northern Province of Khuzestan [PDF]
علوم و مهندسی آبیاری, 2016 The soil hydraulic conductivity (Ks) is very important parameters in soil physic and the designing of drainage systems. In this study the basic infiltration rate, infiltration rate and the saturated and unsaturated soil hydraulic conductivity were ...
Moustafa Bagheri +3 more
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Uncertainty in the determination of soil hydraulic parameters and its influence on the performance of two hydrological models of different complexity [PDF]
, 2009 Data of soil hydraulic properties forms often a limiting factor in unsaturated zone modelling, especially at the larger scales. Investigations for the hydraulic characterization of soils are time-consuming and costly, and the accuracy of the results ...
Facchi, A. +18 more
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Determination of Soil-Water Characteristic Curves of Unsaturated Sandy Soils Using Membrane Filter with Stainless Wire Mesh [PDF]
, 2009 Soil-water characteristic curve (SWCC) is an important soil function in an unsaturated soil mechanics field for design and analyses of any unsaturated earth structures. Determination of SWCC is not easy and more so time consuming. Generally, ceramic disc
Nishigaki, Makoto +4 more
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A Fractal Approach for Predicting Unsaturated Hydraulic Conductivity of Deformable Clay
Geofluids, 2019 The relative hydraulic conductivity is one of the key parameters for unsaturated soils in numerous fields of geotechnical engineering. The quantitative description of its variation law is of significant theoretical and technical values.
Gaoliang Tao +5 more
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An easily installable groundwater lysimeter to determine waterbalance components and hydraulic properties of peat soils [PDF]
Hydrology and Earth System Sciences, 2003 A simple method for the installation of groundwater lysimeters in peat soils was developed which reduces both time and financial effort significantly. The method was applied on several sites in the Rhinluch, a fen peat land 60 km northwest of Berlin,
K. Schwaerzel, K. Schwaerzel, H. P. Bohl
doaj
Analysis on hydraulic characteristics of improved sandy soil with soft rock.
PLoS ONE, 2020 Hydraulic properties of sandy soil from the Mu Us sandy land of Shaanxi Province were analyzed by using SEM technology. Soil porosity, the water characteristic curve, and unsaturated hydraulic conductivity of aeolian sandy soil with added soft rock were ...
Yike Wang +6 more
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2D/3D Numerical Simulation of Saturated and Unsaturated Soil Characteristics and Comparison with Tension Disc [PDF]
علوم و مهندسی آبیاری, 2015 Importance of determining unsaturated soils hydraulic properties in solute transport and water flow is always regarded by soil science engineers.
Rasiul Ghobadian +3 more
doaj
Relationship between Anisotropy in Soil Hydraulic Conductivity and Saturation
Vadose Zone Journal, 2014 Anisotropy in unsaturated hydraulic conductivity is saturation‐dependent. Accurate characterization of soil anisotropy is very important in simulating flow and contaminant transport (e.g., radioactive nuclides at the U.S.
Z. Fred Zhang
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Characterization of stony soils' hydraulic conductivity using laboratory and numerical experiments [PDF]
SOIL, 2016 Determining soil hydraulic properties is of major concern in various fields of study. Although stony soils are widespread across the globe, most studies deal with gravel-free soils, so that the literature describing the impact of stones on the hydraulic ...
E. Beckers +4 more
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