Abstract: 在岩层中开挖隧道时以及开挖后，地下水会倒灌进隧道中。利用SEEP/W 程序，对倒灌进隧道的地下水的水 量及水位变化进行了二维有限元分析。研究对象是位于韩国Gyeongnam 市Cheonseong 山区的Wonhyo 隧道，隧道模 型范围内既有湿地，也有断裂带，选取了隧道沿途的4 个典型区域进行研究。通过DFN 模型计算了岩层中的导水 率的各向异性度，再将各项异性度数据输入连续性模型。为最大限度地减少水利特性所造成的不确定性，文中进行 了参数分析。此外，为了反映某一介质在饱和和非饱和条件下对水的储存和运输能力，模型中还引入了体积含水量 和水利传导性。

Key words: 环境影响评价, 韩国高速列车, 二维有限元分析, 离散裂隙网络模型

摘要： 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．

关键词: environment impact assessment, KTX( Korea Train Express) , salamander lawsuit, 2-D finite element, discrete fracture network model