岩層中的孔隙與裂隙是岩層中水體流動與污染傳輸計算的最小單元，當分析區域擴大時，以孔隙或裂隙尺度為基礎去分析水流與污染傳輸，將成為不可能的任務。其中，除了大量的計算資源需求外，技術及經濟上都存在很大的困難性。為求技術上可行，以連續體的概念去分析大區域裂隙水流與污染傳輸問題，成為目前重要的分析方法。然而，岩層中的裂隙單元或裂隙群，若以連續體（或等效參數）的概念分析，其間的升尺度特性及等效參數的取得是相關分析的重要技術。本研究主要目的是透過數值模式分析及裂隙統計方式，建立及測試離散裂隙與連續體升尺度參數分析技術。經由岩層離散裂隙與連續體水流與污染傳輸分析結果，建立裂隙統計參數與升尺度等效參數間的關係，量化升尺度參數對水流與污染傳輸分析之差異；同時，由現地裂隙量測與分析結果實際應用於模式分析，提升大尺度裂隙含水層水流與污染傳 輸分析技術。 ; The fractures and pores in rock matrix are the fundamental units for calculations of flow and contaminant transport in fractured formations. Due to technical and logical limitations it is difficult in reality to account for such small units for simulations of flow and transport in large-scale problems.The concept of continuum representation of fractured rocks can provide an alternative to resolve the limitations of highly computational costs on flow and transport simulations. For these types of approaches the techniques to obtain the representative parameters such as permeability for fractured rocks are critical for accurate predictions of flow and transport in large-scale fractured formations. The objective of this study is to develop the numerical techniques that are capable to efficiently characterize the representative parameter for fractured rocks. More specifically, the two-dimensional discrete fracture network model and the associated continuum models will be employed to systematically analyze the flow behaviors in fracture formations. Based on the concept of mass balance in flow, the correlations between fracture statistics and the representative continuum parameters will be developed and quantified for a variety of fracture distribution scenarios. The results of this study is expected to provide general insight into the procedures and the associated techniques for analyzing flow and transport in complex large-scale fractured rock systems. ; 研究期間 10201 ~ 10212
