Hydrodynamic Parameter Estimation In A Horizontal Unsaturated Soil Column
Author(s)
C.Evangelides, C.Tzimopoulos
Abstract
Hydrodynamic parameter estimation in a
horizontal unsaturated soil column
C. Tzimopoulos & C. Evangelides
Department of Rural and Surveying Engineering, Aristotle University of
Thessaloniki, Greece
Abstract
A series of experiments were conducted for horizontal absorption and vertical
infiltration in the laboratory in order to determine the diffusivity function D(0),
the hydraulic conductivity K(0) and the characteristic curve *F(0). Soil samples
were used from the area of Ptolemaida Greece for both cases with great effort to
maintain the same density and same pore size distribution. Moisture contents
were measured using gamma ray absorption method and suctions were measured
using tensiometers and pressure transducers. Constant head initial condition was
used during horizontal absorption and moisture profiles were obtained during
different time intervals by continuous scanning the column with gamma rays.
The flux concentration method was used in order to obtain theoretical moisture
profil
Keywords
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