無論是小尺度揮發性油污染清除或較大尺度放射性廢棄物儲存與追蹤等問題，都需要足夠的含水層參數如水力傳導係數等空間分布狀況，作為預測與工程設計之依據。由過去的研究及現地經驗顯示，精確地描述孔隙介質異質性及強化量測能力上的不足，是提高預測準確度及工程效益的首要問題；亦即，透過有限的量測數據： (1)考慮天然含水層的異質性，(2)彌補資料點的不足及界定資料點不足或地質參數異質性所造成的推估不確定性，(3)整合空間上不同位置觀測數據以提高觀測數據的效益，以及(4)規劃高效益的新量測點位置及資料型態以取得最佳的含水層參數資 訊。根據以上的目標，本研究主要目的乃透過數值及實驗方式建立、測試及驗證一個跨孔式水力探測參數分析技術，推估二及三維空間中含水層的水力傳導係數分布。本研究之成果將有助於強化高解析度水力試驗及參數推估技術，透過試驗及模式分析可瞭解異質性含水層的流動與傳輸特性，並量化異質性與觀測資料點不足在預測污染傳輸時所引入之誤差。 ; Sufficient measurements of aquifer properties such as hydraulic conductivity and/or storage coefficient play important roles in predicting flow and contaminant transport. Previous investigations have recognized that the detailed distributions of hydraulic conductivity can significantly improved the accuracy of flow and transport predictions. These predictions therefore are the key components to enhance the capability and efficiency on the site characterization and remediation. To obtain high resolution aquifer properties, the following important issues relevant to hydraulic tests must be resolved: (1) how detail the aquifer properties are considered, i.e., the capability to consider the heterogeneity of aquifers, (2) how to evaluate the uncertainty that are caused by the natural complexity of aquifers, (3) how to integrate the information from hydraulic tests in order to obtain high resolution hydraulic properties, and (4) how can one evaluate efficient procedures for additional wells or hydraulic tests to improve the resolution at sites. Motivated by the proposed issues the objectives of this study are to develop, test, and validate a cross-hole hydraulic test to estimate 2- and 3-D distributions of aquifer parameters with higher spatial resolution. The results of this study are expected to contribute to the developments of hydraulic test techniques and the associated estimation models for heterogeneous aquifer systems. Additionally, the behaviors of flow and transport and measurement uncertainty in heterogeneous aquifers will be systematically discussed. ; 研究期間 10201 ~ 10212
