지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 高聖昊
- 발행연도
- 2014
- 저작권
- 충남대학교 논문은 저작권에 의해 보호받습니다.
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이 논문의 연구 히스토리 (4)
2014
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- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
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초록· 키워드
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The first low- and intermediate-level waste (LILW) disposal facility is under construction in saturated granite in Korea. The safety assessment report (SAR) identified that various gases, such as hydrogen, carbon dioxide, and methane are generated at the disposal facility due to the corrosion of metal wastes and steel drum, and microbial degradation of organic matters. The gases generated seem to cause pressure build-up inside silo, because they cannot flow through the silo concrete, due to its high capillary pressure in groundwater saturated environments. Eventually, they will influence the integrity of the silo concrete and cause crack generation on the surface of the silo concrete. This will enhance the groundwater flow containing radionuclides from the silo to geosphere. So, it is very important to understand the environment inside the Silo.
Hence, gas migration modeling was performed using TOUGH2 code. Important input variables, such as gas permeability and gas entry pressure of the silo concrete in the modeling were determined by laboratory-scale experiments. Environmental changes such as pressure distribution and gas saturation were analyzed. The results of the study showed that most of hydrogen gas was dissolved in groundwater and did not significantly influence pressure inside the silo. And accurate modeling input parameters are required in order to obtain a more precise results.
Hence, gas migration modeling was performed using TOUGH2 code. Important input variables, such as gas permeability and gas entry pressure of the silo concrete in the modeling were determined by laboratory-scale experiments. Environmental changes such as pressure distribution and gas saturation were analyzed. The results of the study showed that most of hydrogen gas was dissolved in groundwater and did not significantly influence pressure inside the silo. And accurate modeling input parameters are required in order to obtain a more precise results.
목차
목차List of FiguresList of Tables1. 서 론1.1 연구 필요성1.2 국내?외 연구동향1.3 연구목적2. 이론적 배경2.1 경주 처분장 구성2.2 국외 지하처분시설2.3 기체발생2.4 기체이동 메커니즘2.5 기체이동 해석 요소2.5.1 상대투과율2.5.2 모세관압3. 수치해석3.1 해석대상3.2 경계조건 및 초기조건3.3 지배방정식3.4 해석방법3.5 Source4. 결과 및 고찰4.1 압력분포4.2 기체 포화도4.3 민감도 분석4.3.1 기체 발생량4.3.2 기체유동 함수 변수4.3.3 사일로 내부 포화5. 결 론참고문헌Abstract
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