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A Study of Probabilistic Groundwater Flow Modeling Considering the Uncertainty of Hydraulic Conductivity  

Ryu Dong-Woo (한국지질자원연구원)
Son Bong-Ki (서울대학교 지구환경시스템공학부)
Song Won-Kyong (한국지질자원연구원)
Joo Kwang-Soo (현대건설)
Publication Information
Tunnel and Underground Space / v.15, no.2, 2005 , pp. 145-156 More about this Journal
Abstract
MODFLOW, 3-D finite difference code, is widely used to model groundwater flow and has been used to assess the effect of excavations on the groundwater system due to construction of subways and mountain tunnels. The results of numerical analysis depend on boundary conditions, initial conditions, conceptual models and hydrogeological properties. Therefore, its accuracy can only be enhanced using more realistic and field oriented input parameters. In this study, SA(simulated annealing) was used to integrate hydraulic conductivities from a few of injection tests with geophysical reference images. The realizations of hydraulic conductivity random field are obtained and then groundwater flows in each geostatistically equivalent media are analyzed with a numerical simulation. This approach can give probabilistic results of groundwater flow modeling considering the uncertainty of hydrogeological medium. In other words, this approach makes it possible to quantify the propagation of uncertainty of hydraulic conductivities into groundwater flow.
Keywords
simulated annealing hydraulic conductivity; uncertainty; groundwater flow modeling;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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