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NTIS 바로가기Journal of Korea Water Resources Association = 한국수자원학회논문집, v.52 no.2, 2019년, pp.149 - 161
In this study, the effect of the fluid flow characteristics on the length distribution of the fracture elements composing the fracture network is analyzed numerically using the 3D fracture crack network model. The truncated power-law distribution is applied to generate the length distribution of the...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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투수성이 매우 낮은 균열 암반 내에 존재하는 서로 연결된 균열요소들이 일반적으로 고려되는 곳은 어디인가? | 투수성이 매우 낮은 균열 암반 내에 존재하는 서로 연결된 균열요소들로 이루어진 균열망은 유체 흐름을 위한 주요 경로가 된다. 이러한 균열망은 암반 내 원유 추출, 암반 대수층 저장 및 관리, 심부 지열 에너지 추출, 오염된 균열 암반의 복원 및 방사성 핵폐기물 처분장 등에서 일반적으로 고려된다(Adler et al., 2012; Berkowitz, 2002; Faybishenko, 2005; Karra etal. | |
균열망이란? | 투수성이 매우 낮은 균열 암반 내에 존재하는 서로 연결된 균열요소들로 이루어진 균열망은 유체 흐름을 위한 주요 경로가 된다. 이러한 균열망은 암반 내 원유 추출, 암반 대수층 저장 및 관리, 심부 지열 에너지 추출, 오염된 균열 암반의 복원 및 방사성 핵폐기물 처분장 등에서 일반적으로 고려된다(Adler et al. | |
이산 균열망 모형의 특징은? | 가장 많이 적용되는 두 가지 주요 수학적 모형은 암반이 다공성 매질로 대표되고 투수계수가 규모에 종속적이며, 공간적으로 상관된 확률장으로 표현되는 연속체 모형과 개별적인 균열요소의 기하학적 및 물리적 특성이 명확하게 표현되는 이산균열망(Discrete Fracture Network, DFN) 모형이다. 이산 균열망 모형은 일반적으로 연속체 모형보다 넓은 범위의 유체 흐름 현상을 모의할 수 있으나(Painter and Cvetkovic, 2005; Painter et al., 2002), 이에 따라 보정되어야할 매개변수가 상대적으로 많아지기 때문에 입력자료 구축에 있어 불확실성이 증가된다(Neuman, 2005). 예를 들어 높은 신뢰성을 가진 이산 균열망 모형을 통한 유체 흐름 모의를 위해 균열요소에 대한 간극분포의 변동성을 포함시킬 수 있으나 균열 내의 변동성으로 국한시키기 위해서는 특정 암반에 대한 상세한 정보가 필요하다(de Dreuzy et al. |
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