파쇄대의 공간적 분포가 터널 거동에 미치는 영향 - 수치해석 연구 (Effect of orientation of fracture zone on tunnel behavior - Numerical Investigation)
| Author(s): |
Chung-Sik Yoo
Jung-Gyu Park |
|---|---|
| Medium: | journal article |
| Language(s): | Korean |
| Published in: | Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집), 2013, n. 3, v. 15 |
| Page(s): | 253-270 |
| DOI: | 10.9711/ktaj.2013.15.3.253 |
| Abstract: | 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. |
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10394750 - Published on:
04/01/2020 - Last updated on:
24/01/2020
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