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A case study on excessive displacements occurred in the tunnels caused by rainfall

강우로 인한 터널내부 과다변위 사례 연구

  • Received : 2012.07.18
  • Accepted : 2012.09.24
  • Published : 2012.11.30

Abstract

Recently, tunnel constructions have been increased in Korea. According to the increment of tunnel constructions, cases of tunnel collapses also have been increased under tunnel construction. Among these tunnel collapses, after a certain amount of time has elapsed due to excessive displacements on slope of tunnel exit or entrance, cases of tunnel collapse have been increased rapidly. Therefore, the case study was conducted in this study to figure out factors effect on the tunnel collapses due to excessive displacements on tunnel exit or entrance slopes. Base on the case study, the fragmental zone of fault and the rainfall were most important factors on the collapse.

최근들어 터널건설이 증가하고 있다. 이러한 터널건설 증가와 더불어 터널시공중 붕락발생 빈도도 증가하고 있다. 이와 비례하여 터널 입 출구부 사면부 변상 발생후 터널내부까지 과다변위를 발생시키는 사례 또한 자주 발생하고 있다. 따라서 본 연구에서는 터널시공 사례를 분석하여 갱구부 사면변상과 터널내부 변위를 발생시키는 요인들을 조사하였고 그중 특히 국부적인 단층파쇄대와 강우가 직접적인 붕락을 발생시키는 요인으로 분석되었다.

Keywords

References

  1. Korean tunnelling and underground space association (2010), "Case histories of tunnel collapses", pp. 16-27.
  2. Korea institute of construction technology (2007), "Development of technologies for minimizing and preventing the disaster on tunnel constrction(IV)", pp. 24-77.
  3. OOtunnel workin design report (2007),"Tunnel deformation and collapse cases review", pp. 40-58.

Cited by

  1. Analysis on Surface Collapse of the Road NATM Tunnel through the Weathered Rock vol.15, pp.2, 2016, https://doi.org/10.12814/jkgss.2016.15.2.055