The Effects of Different Excavation Angle on Intersecting Tunnel Surrounding Rock Stability

DOI

10.2991/mic-15.2015.57How to use a DOI?

Keywords

Intersecting tunne; Excavation angle; Numerical simulation; Supporting structure; Deformation of surrounding rock.

Abstract

Various contacting channels and intersecting tunnels often need to be constructed in the tunnel construction process. While in the process of intersecting tunnel construction, the excavation of back tunnel will cause surrounding rock and supporting structure stress adjustment and redistribution. The excavation of two crossing tunnels will cause lots of changes in the rock and supporting structure mechanical characteristics. It has great impact on the intersection of the stress and deformation. The background of this paper is the Dalian subway project and selects excavation angle of 30°, 45°and 90°. In order to obtain the supporting structure stress change and deformation of surrounding rock in the process of main tunnel and intersecting tunnel excavation with different angle, this paper use MIDAS/GTS to carry on the numerical simulation and analysis earth surface settlement, vault, clear convergence variation. Finally it obtains the reasonable angle of intersecting tunnel and to guide the construction of the project smoothly.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Li Jinkui
AU  - Wei Xianke
AU  - Liang Wenjing
PY  - 2015/08
DA  - 2015/08
TI  - The Effects of Different Excavation Angle on Intersecting Tunnel Surrounding Rock Stability
BT  - Proceedings of the 2nd International Conference on Modelling, Identification and Control
PB  - Atlantis Press
SP  - 247
EP  - 251
SN  - 1951-6851
UR  - https://doi.org/10.2991/mic-15.2015.57
DO  - 10.2991/mic-15.2015.57
ID  - Jinkui2015/08
ER  -