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NTIS 바로가기Journal of Korean Tunnelling and Underground Space Association = 한국터널지하공간학회논문집, v.18 no.5, 2016년, pp.469 - 485
이근채 (한양대학교 자원환경공학과) , 문현구 (한양대학교 자원환경공학과)
The failure of rock mass around deep tunnel, different from shallow tunnel largely affected by discontinuities, is dominated by magnitudes and directions of stresses, and the failures dominated by stresses can be divided into ductile and brittle features according to the conditions of stresses and t...
핵심어 | 질문 | 논문에서 추출한 답변 |
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지하 공동 주변 암반의 파괴는 무엇에 의존하는가? | 지하 공동 주변 암반의 파괴는 현장 응력 수준과 암반의 특성에 의존한다(Hoek et al., 1995). | |
암반 내 응력은 무엇으로 대별되는가? | 암반 내 응력은 현장 응력(in situ stresses)과 유도 응력으로 나뉜다. 현장 응력은 자연(natural), 초기 (primitive), 처녀(virgin) 응력이라고도 부르며 교란이 발생하기 전 암석 내의 응력을 말한다(Amadei and Stephansson, 1997). | |
심부에서 굴착되는 지하 공동 주변 암반과 일반적인 천부 암반은 어떤 다른 거동 양상을 보이는가? | 심부에서 굴착되는 지하 공동 주변 암반은 일반적인 천부 암반과 다른 거동 양상을 보인다. 심부의 높은 현장 응력 수준은 지하 공동을 굴착할 때 공동 주변에 높은 유도 응력(induced stresses)을 발생시킨다(Hoek and Marinos, 2008). 이 높은 유도 응력으로 인하여 암석의 종류(Aydan et al., 1996), 암반 내 불연속면의 특성(Martin et al., 1999)에 따라 취성(brittle) 이나 연성(ductile) 거동을 보이게 되며 전자에 의해서는 파석(spalling), 암석 파열(rock burst) (Roby et al., 2008; Kaiser and Cai, 2012; Wang et al., 2012)로 후자는 압출(squeezing) (Panet, 1996; Hoek and Guevara, 2009; Mezger et al., 2013)로 대표되는 현상들을 발생시킨다. |
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