Geomechanics and Engineering

  • 제16권1호
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  • Pages.97-104
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  • 2018
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Study on deformation law of surrounding rock of super long and deep buried sandstone tunnel

  • Ding, Lujun (College of Water Resource and Hydropower, Sichuan University) ;
  • Liu, Yuhong (Sichuan College of Architectural Technology)
  • 투고 : 2017.12.26
  • 심사 : 2018.04.07
  • 발행 : 2018.09.20
⟨ 이전 논문 다음 논문 ⟩

초록

The finite difference software Flac3D is used to study the influence of tunnel burial depth, tunnel diameter and lateral pressure coefficient of original rock stress on the stress and deformation of tunnel surrounding rock under sandstone condition. The results show that the maximum shear stress, the radius of the plastic zone and the maximum displacement in the surrounding rock increase with the increase of the diameter of the tunnel. When the lateral pressure coefficient is 1, it is most favorable for surrounding rock and lining structure, with the increase or decrease of lateral pressure coefficient, the maximum principal stress, surrounding displacement and plastic zone range of surrounding rock and lining show a sharp increase trend, the plastic zone on the lining increases with the increase of buried depth.

키워드

참고문헌

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