한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2010년도 추계 학술발표회
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- Pages.1358-1365
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- 2010
Taiwan의 Pinglin 터널에서의 Squeezing 거동 분석 사례 연구
A case study on squeezing behavior of Pinglin tunnel in Taiwan
- Yun, Il-Joong (Hanjin Heavy Industries & Construction) ;
- Yoo, Ki-Cheong (Hanjin Heavy Industries & Construction)
- 발행 : 2010.09.09
초록
A case study deals with Squeezing behavior under tunneling. Squeezing stands for large time-dependent convergence during tunnel excavation. Squeezing can occur in both rock and soil as long as the particular combination of induced stresses and material properties pushes some zone around the tunnel beyond the limiting shear stress at which creep starts. Under squeezing rock conditions, If the support installation is delayed the rock mass moves into the tunnel and a stress redistribution takes place around it. On the contrary, if deformation is restrained, squeezing will lead to long-term load build-up of rock support. This paper shows analysis case mutually with monitoring and numerical analysis result of squeezing behavior of Pinglin tunnel in Taiwan.