Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2008.03a
- /
- Pages.742-753
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- 2008
Failure Mechanism of NATM tunneling using Computational Methods and Geology Investigation
수치해석수법과 지질공학적 분석을 통한 NATM터널의 붕괴메커니즘에 관한 연구
- Lee, Jae-Ho (Dept. of Civil Engineering, Kyungpook National University) ;
- Kim, Young-Su (Dept. of Civil Engineering, Kyungpook National University) ;
- Choi, Hea-Jun (Tunnel Div., Chung-Suk Eng'rg co., Ltd.) ;
-
Jeong, Yun-Young
(Tunnel Div., Chung-Suk Eng'rg co., Ltd.)
;
- Jin, Guang-Ri (Dept. of Civil Engineering, Kyungpook National University) ;
- Rim, Hong-Rae (Tunnel Div., Chung-Suk Eng'rg co., Ltd.)
- 이재호 (경북대학교 토목공학과) ;
- 김영수 (경북대학교 토목공학과) ;
- 최해준 ((주)청석엔지니어링 터널사업부) ;
-
정윤영
((주)청석엔지니어링 터널사업부)
;
- 김광일 (경북대학교 토목공학과) ;
- 임홍래 ((주)청석엔지니어링 터널사업부)
- Published : 2008.03.28
Abstract
Currently an increasing number of urban tunnels with small overburden are excavated according to the principle of the New Austrian Tunneling Method (NATM). Therefore, a possibility of a tunnel collapse during excavation is getting higher in a proportionate manner. This paper will analyze causes the failure mechanism of a shallow NATM tunnel for different geological conditions, ground-water and invert solutions by investigation typical collapse site during tunnel construction. In this paper, this analysis performed two phase, firstly, the field investigation considering displacement measurement, ground-water level, geological characteristic, secondly, the numerical simulation considering the exist of invert construction and the effect of ground-water. It has been found that environmental factors such as state of underground water or construction sequences could influence failure mechanism of a shallow tunnel.