Analysis of the Change in Groundwater System with
Tunnel Excavation in Discontinuous Rock Mass
Jung-Wook Park,Chung-In Lee
2011, 30(S2):
1073-1079.
DOI: 10.3969/j.issn.1674-0696.2011.supp2.001
In this study,a 2-D finite-element analysis,using the SEEP/W program,was carried out to estimate the amount
of groundwater flowing into a tunnel,as well as the groundwater tables around wetland areas during and after tunnel excavation
through rock mass. Four sites along the Wonhyo-tunnel in Cheonseong Mountain ( Gyeongnam,Korea) were analysed,
where the model domain of the tunnel included both wetland and fault zones. The anisotropy of the hydraulic conductivities
of the rock mass was calculated using the DFN model,which was then used as an input parameter into the continuum model.
Parametric studies were performed on the influencing factors to minimize uncertainties in the hydraulic properties. Moreover,
the volumetric water content and hydraulic conductivity functions were applied to the model to reflect the ability of a medium
to store and transport water under both saturated and unsaturated conditions.
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