Research on the Influence for Stability of Surrounding Rock between Two-Step Method and CRD Method

DOI

10.2991/iea-15.2015.3How to use a DOI?

Keywords

subway tunnel; two-step; CRD method; numerical simulation; IV level of surrounding rock.

Abstract

In the subway tunnel engineering, using different methods of tunnel excavation, the different influence on the stability of surrounding rock above class IV. Therefore, this paper is based on the specific engineering example. A subway tunnel in Dalian using FLAC3D software respectively adopts the CRD method and two-step method of excavation construction process in numerical simulation. By comparing the analysis of stress diagram and displacement after tunnel excavation and the range of plastic zone, researching these two methods impact on the stability of surrounding rock. Studying the results show this: The CRD method is adopted for surrounding rock in tunnel excavation above class IV. Not only decreasing the interference of the surrounding rock, but also controlling the total deformation and settlement of the surrounding rock. T he stability of surrounding rock is improved.

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  - Hu Jun
AU  - Jin Lingling
PY  - 2015/09
DA  - 2015/09
TI  - Research on the Influence for Stability of Surrounding Rock between Two-Step Method and CRD Method
BT  - Proceedings of the AASRI International Conference on Industrial Electronics and Applications (2015)
PB  - Atlantis Press
SP  - 6
EP  - 9
SN  - 2352-5401
UR  - https://doi.org/10.2991/iea-15.2015.3
DO  - 10.2991/iea-15.2015.3
ID  - Jun2015/09
ER  -