Abstract
In this study, column tests were conducted for various sandy soil samples using NaCl solution. An inverse problem study was made to examine test specifications and evaluation methods and the effects of soil conditions on geoenvironmental parameters. As a result, it was found that 1) the effective porosity of samples with high fine particle content was dependent on the hydraulic gradient and the effective porosity of samples with high cation exchange capacity was dependent on electrolyte concentration, that 2) the longitudinal dispersion length of samples with high fine particle content was much greater than the values in existing literature, and that 3) sufficiently accurate geoenvironmental parameters could be identified using a simple formula as long as a Peclet number of more than 40 could be secured in the column test.
