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Characteristics of Tunnel Convergence Behaviour based on Variation of Rock Mass Rating
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암반 등급 변화에 따른 터널 내공 변위 거동 특설

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Type
Academic journal
Author
Kim, Kwang-Yeom (한국건설기술연구원 지하구조물연구실)
Journal
The Korean Society of Engineering Geology The Journal of Engineering Geology 지질공학 제18권 제4호 KCI Accredited Journals
Published
2008.1
Pages
545 - 553 (9page)

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Characteristics of Tunnel Convergence Behaviour based on Variation of Rock Mass Rating
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Face mapping and displacement monitoring during tunnel construction are the most influential information for the stability assessment of ground and around structures. Especially, the result of face mapping and displacement analysis is essential to the excavation and support design in NATM which is based on the drilling and blasting. However, there have not been so many studies to put those useful information into practice for decision-making process during construction. The study reviewed the tunnel behaviour based on the RMR rating and displacement monitoring when the geological condition of rock mass varies inevitably. The study analysed the crown settlement using convergence equation in order to compensate the disparity induced by the location and time of measurement and found a distinct relation between the geological condition and the line of influence. As a result of analysing the various parameters related to the tunnel convergence according to the geological condition, the study suggested the basic knowledge about the relation between face mapping and displacement behaviour of tunnel.
#막장관찰 #계측 #내공변위

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