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題名 | GoldSim與INPAG-N之近場模式比較研究=Comparative Study of Near Field Model with GoldSim and INPAG-N |
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作者 | 盧俊鼎; 朱信忠; 莊文壽; | 書刊名 | 台電工程月刊 |
卷期 | 660 2003.08[民92.08] |
頁次 | 頁64-73 |
分類號 | 449.8 |
關鍵詞 | 近場; 概念模式; 核種傳輸; GoldSim; INPAG-N; Near field; Conceptual model; Radionuclide; |
語文 | 中文(Chinese) |
中文摘要 | 本文利用美國亞卡山計畫(Yucca Mt. Project)所採行之全系統功能評估工具 GoldSim,建構我國放射性廢料處置概念之近場模式,並與核式建構的差異及參數特性對於 近場分析結果的影響,以作為修正功能評估概念模式的參考。 於近場環境中核種外德的可能情節假設為:處置場封閉之後,近場環境中將逐漸充滿地下 水,若干年後廢料罐將因腐蝕或製造缺陷等因素產生蝕孔或完全失去作用,乙時地下水的入 侵將造成充滿廢料料體兼併產生溶解現象逐漸向外流出。德出的核種隨地下水流經由緩衝材 料、開挖擾動帶等途徑,進入處置母岩的裂隙中並向外傳輸而出。 由GoldSim與INPAG-N的比較分析結果得知,對於吸附性較低的核種在不同的達西流速 條件下,兩者運算之結果極為相符。而於吸降性較高之核種,則在較低達西流速的條件下有 較佳的比對結果,在高達西流速時則較不理想。此差異的形成,可能是因為在較低的達西流 速之下,核種於不同材料中的吸附特性將因而變得不顯著,亦或GoldSim與INPAG-N兩者於 傳輸模型或架構的假設不同所致。 |
英文摘要 | Total system performance assessment tool of GoldSim in Yucca Mountain Project was adopted to build Taiwanese's near field conceptual model, and compare with the program of INPAG-N which developed by INER. This paper evaluates the differences and characteristics of parameter between two models and to facilitate the basis of modification of performance assessment conceptual models. Assumption of scenarios about radionuclides transport in near field is that, when disposal holes filled with groundwater after repository closure, due to corrodes or manufacturing faults, the pit corrosion will be generated and waster form dissolved at that time. Radionuclides will transport with groundwater through buffer, excavated disturbed zone, and fractures of host rocks into the outer. Comparative study results of GoldSim and INPAG-N were shown a good agreement with lower adsorptive nuclide when is slow Darcy's velocity. Solubility would not be affected by Darcy's velocity in this case. The division of GoldSim and INPAG-N could be caused by the adsorptive or the difference of theoretical assumption in transport. |
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