Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)
Online ISSN : 2185-6516
ISSN-L : 2185-6516
Paper (In Japanese)
IDENTIFICATION OF AQUIFER PARAMETERS BY DUAL-BOREHOLE SALTWATER TRACER TEST AND INVERSE ANALYSIS USING THREE-DIMENSIONAL NUMERICAL MODEL
Akira TOMIGASHIKatsuyuki FUJINAWA
Author information
JOURNALS FREE ACCESS

2013 Volume 69 Issue 3 Pages 297-311

Details
Abstract

 In order to identify saturated hydraulic conductivity and longitudinal dispersivity, saltwater tracer tests using dual boreholes were performed for an unconfined and an underlying confined aquifer at Nagano-Wakasato campus of Shinshu University. The data of electrical conductivity monitored at injection and observation borehole were used to inversely identify the parameters by combining a three-dimensional numerical model, SIFEC3dp, for solving coupled problems of density-dependent, saturated-unsaturated flow and convective-dispersive transport of conservative tracer in an aquifer system, and Powell's optimization method. The developed method was first validated by applying to arbitrary test cases with given parameters. Furthermore, application of the inverse method to the site generated reasonable results while numerical simulations using identified parameters satisfactory reproduced measured salt concentrations.

Information related to the author
© 2013 by Japan Society of Civil Engineers
Previous article Next article
feedback
Top