• Title/Summary/Keyword: 대심도 터널

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Proposal of Design Criteria on Multi-functional Tunnel for the Urban Traffic Tunnel to Flooding Bypass (도심지 홍수저감과 교통량 분담을 위한 다기능 대심도 터널 설계 기준 방안 제시)

  • Kwon, Soonho;Kim, Junghwan;Chung, Gunhui
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.5
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    • pp.3518-3524
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    • 2015

  • Spatial and time variation of the precipitation in Korea is high, therefore, more than 2/3 of the annual precipitation is concentrated during the rainy season. Climate change also causes the intensive rainfall in the area of dense population, thus the occurrence frequency of the heavy flood in the impervious area has been increased. Therefore, the structural food mitigation measures such as the construction of the higher design frequency stormwater pipes, pumping stations, and/or detention ponds. The flood bypass tunnel or retention storage is also one of the efficient structures to mitigate flood damage in the urban area. However, the economic feasibility has been controversial because the flood bypass tunnel might be used once or twice a year. To solve the problem, the multi-functional tunnel for the urban traffic and flooding bypass has been considered. In this study, the design criteria of the road and water tunnel has been analysed and the composite design criteria is proposed for the multi-functional tunnel which is expected to be constructed.

  • https://doi.org/10.5762/KAIS.2015.16.5.3518 인용 PDF KSCI

Effect of orientation of fracture zone on tunnel behavior - Numerical Investigation (파쇄대의 공간적 분포가 터널 거동에 미치는 영향 - 수치해석 연구)

  • Yoo, Chung-Sik;Cho, Yoon-Gyu;Park, Jung-Gyu
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.15 no.3
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    • pp.253-270
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    • 2013

  • This paper concerns the effect of orientation and geometric characteristics of a fracture zone on the tunnel behavior using a numerical investigation. A parametric study was executed on a number of drill and blast tunnelling cases representing different fracture and tunnelling conditions using two and three dimensional finite element analyses. The variables considered include the strike and dip angle of fracture zone relative to the longitudinal tunnel axis, the width and the clearance of the fracture zone, the tunnel depth, and the initial lateral stress coefficient. The results of the analyses were examined in terms of the tunnel deformation including crown settlement, convergence, and invert heave as well as shotcrete lining stresses. The results indicate that the tunnel deformation as well as the shotcrete lining stress are strongly influenced by the orientation of the fracture zone, and that such a trend becomes more pronounced for tunnels with greater depths.

  • https://doi.org/10.9711/KTAJ.2013.15.3.253 인용 PDF KSCI