Estimating Unsaturated Hydraulic Conductivity in Unsaturated Soil Using Soil Moisture Sensors
نویسندگان
چکیده
Unsaturated hydraulic conductivity (K) is a measurement of soil water-retaining ability in unsaturated soil. The properties are necessary to predict the movement water current study aims create an alternative experimental device estimate theKusing moisturesensors. set up was designed and fabricated order measure volumetric content using GS3 (Campbell) sensors at different heights. data obtained from validated mass moist sand column measured electronic balance.TheKwas estimated with help retention functions. primary materials used were solute-free sand. It found that reading good match calculated root mean square error 0.0091. Soil curve plotted Peters-Durner-Iden (PDI) model.The results compared van Genuchten function. TheKprediction wasinitially equivalentfor both models, but lateroverpredicts falling rate increasing matric suction before underpredict after 200 cm on sandy soil.PDI function able extrapolate film flow region
منابع مشابه
Unsaturated hydraulic conductivity function based on a soil fragmentation process
We present a new two-parameter expression for relative hydraulic conductivity (RHC) of partially saturated soils. It is based on the premise of Assouline et al. [1998] that soil structures evolve from a uniform random fragmentation process. This assumption allows us to derive hydraulic properties of soils (water retention curves and unsaturated hydraulic conductivity) from primary properties, s...
متن کاملEffective Unsaturated Hydraulic Conductivity
Steady-state and transient one-dimensional unsaturated flow in vertically stratified porous media are examined. Saturated hydraulic conductivity and the alpha parameter of the exponential hydraulic conductivity function were assumed to vary from soil layer to soil layer. The use of effective unsaturated hydraulic conductivity to compute matric potential in the soil profile is demonstrated. Resu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Integrated Engineering
سال: 2023
ISSN: ['2229-838X', '2600-7916']
DOI: https://doi.org/10.30880/ijie.2023.15.01.024