用過核子燃料最終處置場之滲透率影響及處置罐依序放熱分析

NCUIR > Engineering College > Graduate Institute of Civil Engineering > Electronic Thesis & Dissertation > Item 987654321/83048

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/83048

Title:	用過核子燃料最終處置場之滲透率影響及處置罐依序放熱分析
Authors:	劉致緯;Liu, Zhi-Wei
Contributors:	土木工程學系
Keywords:	用過核子燃料;深層地質處置場;多處置孔分析;Spent Nuclear Fuel;Deep Geological Repository;multi-disposal holes
Date:	2020-08-06
Issue Date:	2020-09-02 14:32:26 (UTC+8)
Publisher:	國立中央大學
Abstract:	深層地質處置場之研究中，許多事項皆須進行評估，以確保處置場的安全性。本研究使用有限元素軟體ABAQUS進行模擬分析，以探討處置場中之溫度、飽和度及有效應力問題。首先，本研究參考DECOVALEX之BMT1B工作任務，藉由改變母岩孔隙率，來討論不同母岩滲透率之情況下，處置場中溫度及飽和度影響，也分析緩衝材料之滲透率參數影響，並進一步緩衝材料之水力傳導係數隨溫度改變之飽和度結果影響；其次，分析處置罐於不同時間開始放熱，對處置場之溫度、飽和度及有效應力影響，由於分析上需針對兩個以上之處置罐進行，故「代表體積單元」不適合此分析上的應用，需使用「處置設施多孔幾何配置」；最後為了模擬處置罐埋放之問題，須考慮到埋放前，該處置隧道之材料為母岩，埋放完成後，處置隧道中材料會變成回填材料、緩衝材料及處置罐，分析上需考慮材料的變化，以呈現出真實情況。 ;Study of deep geological repository, many items must be evaluated to ensure the safety of the repository. In this study, using finite element software ABAQUS for analysis to discuss the temperature, saturation and effective stress in the repository. First, this research refers to the BMT1B of DECOVALEX III project. By changing the porosity of the rock, to discuss the influences of temperature and saturation in the repository under different rock permeability. It is also aimed at the influence of the permeability parameter of the buffer material. Secondly, in order to analyze the temperature, saturation and effective stress of the repository that the canister started to release heat at different times. Since analysis needs to be conducted on more than two canisters, the "representative volume element " is not suitable for this analysis application, use the "multi-disposal holes ". Finally, in order to simulate the problem of burying the canister, it must be considered that the material of the disposal tunnel is rock before burying. After buried, the materials in the disposal tunnel will become backfill, buffer and canister. The analysis needs to consider the changes of materials, which can better present the real situation.
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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