한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2006년도 춘계 학술발표회 논문집
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- Pages.925-930
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- 2006
강도감소법을 이용한 산악터널 갱구부의 안전영역 평가
An Assessment of Safety Zone for Mountain Tunnel Portal Using Strength Reduction Technique
- Hong, Chang-Soo (R&D Team, Samsung Corporation) ;
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Hwang, Dae-Jin
(R&D Team, Samsung Corporation)
;
- Lee, Kang-Ho (TA Team, Samsung Corporation) ;
- You, Kwang-Ho (Dept. of Civil Engineering, Suwon University)
- 발행 : 2006.03.24
초록
During the excavation of a tunnel portal, failure zones around the tunnel heading occur and also the ground supports itself. In a portal, its location and the ground characteristic have a great influence on the stability of the tunnel. Therefore, the failure mechanism of a tunnel heading and how to assess the stability of the tunnel are very important. In this paper, the numerical analyses were executed to evaluate the safety factor using strength reduction technique. The influence area of an excavation was also predicted through a case study in which no-support case and support case with the Pattern P-6 were compared in terms of the ground class and the shear strain.