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題 名 | 破裂岩層中溶質傳輸之徑向延散模式分析及應用於示蹤劑試驗=Analysis of Radial Dispersion for Solute Transport and Its Application to a Tracer Test in Fractured Rocks |
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作 者 | 陳榮華; 張善順; 李振誥; 陳寒濤; | 書刊名 | 鑛冶 |
卷 期 | 42:2=162 1998.06[民87.06] |
頁 次 | 頁115-126 |
分類號 | 441.13 |
關鍵詞 | 破裂岩層; 溶質傳輸; 發散型徑向流試驗; 延散度; Fractured rock; Solute transport; Divergent flow test; Dispersivity; |
語 文 | 中文(Chinese) |
中文摘要 | 本文主要是探討利用井測示蹤劑試驗資料來模擬污染物在破裂岩層傳輸行為之數 值分析,且示蹤劑之注入方式為連續注入及瞬間注入。文中首先以實數空間定義域之有限差 分法模擬破裂炭層中發散型示蹤劑試驗之傳輸行為。若外,以拉普拉斯定義域之有限差分法 探討發散型示蹤劑試驗之數值解,並Φ與前人 (4) 已發展之半解析解作比較。 進而利用此 兩種模式所得之標準曲線,與美國 Oracle 地區現場示蹤劑試驗所得之穿透曲線進行套合, 以估計破裂岩層之延散度、孔隙率、內寬值及 Pe 值。研究結果顯示,利用實數空間定義域 模式套合現場穿透曲線,得到孔隙率約為 0.066、地層當量內寬為 0.0106m、延散度α約為 0.66m、Pe 值為 7.85。 利用拉普拉斯定義域模式數值解與前人 (4) 之半解析解比較, 當 Pe 值小時,兩者結果有些差異,當 Pe 值大時,則模擬結果很接近, 至於套合現場穿透曲 線結果,顯示 Pe 值為 6.75。 |
英文摘要 | This paper is to study the behavior of the solute transport in fractured rocks by means of have been divergent flow tracer test. Two models used to analyze and interpretate field tracer test, model 1 is based on finite difference method in real domain, and model 2 is based on finite difference methed in Laplace domain. Model 1 can be accommodated a pulse, step increase, and arbitrary injection to simulate the concentration distribution. Model 2 has been developed with finite difference method in Laplace domain, differentiating from tranditive numerical inverse method(4). Simulational results of model 2 are used to compare with the results of Chen(4). Using the field data that provided by field divergent flow tracer test in Oracle, Arizona, it involves a curve matching procedure, to compare with the results of model 1 and model 2. Results show that application of model 1 on Oracle field data the value of longitudinal dispersivity of 0.66m, effective porosity is 0.066, equivalant aperture is 0.0106m, and Peclet number is 7.85. In addition, the application of model 2 gives the value of peclet number 6.75. |
本系統中英文摘要資訊取自各篇刊載內容。