研究核種傳輸行為最重要的在於瞭解多重障壁系統(multiple barrier system)水文地質特性，如水力傳導係數(hydraulic conductivity)、延散度(dispersivity)、擴散係數(diffusion coefficient)與分配係數(distribution coefficient)等重要參數。本研究主軸在於開發地下水流場與核種傳輸數值模式，可處理非穩態、非均質、非等向地質環境之複雜流場。更結合實驗室試驗管柱，執行核種移流、延散與擴散傳輸試驗，藉由核種濃度觀測數據，驗證本研究發展核種傳輸重要參數反推估模式，並與傳統實驗法推估結果進行比較。本研究規劃2年期的研究工作，第一年先完成開發地下水流場與核種傳輸模式與參數反推估模式，並藉由已知測試例與試驗觀測結果，驗證反推估數值模式。第二年則是改良實驗操作流程，獲得較好觀測數據，提高參數反推估模式計算效能。未來可以提供既有核種傳輸參數檢核以外，亦可作為設計其他核種傳輸重要參考依據。 ;The most important process in radionuclide transport is performed to obtain hydrogeological parameters of multiple barrier systems, including hydraulic conductivity/transmissivity, dispersivity, diffusion coefficient, and distribution coefficient at a site. The main topic of the study is to develop groundwater flow and radionuclide transport numerical models. The models can handle complex flow fields under unsteady, heterogeneous, and anisotropic conditions of the geological environment. In this research, the numerical models are used to combine with column test to implement radionuclide advection-dispersion-diffusion equation transport test. Additionally, the observation data is applied to validate the developed inverse model and compare with the traditional experimental method to estimate the results. This 2-year research work aims to: (1) develop and validate radionuclide transport along with inverse numerical model, (2) compare with the traditional experimental method to evaluate the results, (3) improve the experimental operation process as well as achieve the effective observation data, and (4) enhance the inverse model effectiveness. In the future, the models can provide not only the verification of the existing radionuclide transport parameters but also the important reference for the design of other radionuclide transport experiments.
