Structure effects on seismic response of underground cavern in joint network rock mass

DOI

10.2991/iccmcee-15.2015.252How to use a DOI?

Keywords

underground cavern; jointed rock mass; seismic response; random joint network; structure effects

Abstract

In this paper, structure control effect of joint network rock mass on seismic response of underground cavern is investigated. With discussion of the generating principle of 2-d joint network, five characterizing parameters, i.e. as joint density, joint orientation & its discretization, joint trace length & its discretization are identified. The machine hall cavern of Dagangshan hydropower plant is taken as a study case here. The results indicate that in the precondition of a same seismic level, seismic displacement increases with the joint density. Seismic displacement also increases with the joint inclination increase at the range of 0°-80°. If the discretization of joint inclination is considerable, the seismic displacement is of positive correlation with joint inclination discretization, yet if the discretization of joint inclination is comparatively small, this correlation is ignorable. Seismic displacement increases with the joint trace length increase. At last, little relationship between joint trace length discretization and seismic displacement has been found. Those findings may provide certain reference for the aseismic design of the underground caverns.

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  - Zhen Cui
AU  - Xianlun Leng
AU  - ZeQi Zhu
AU  - Qian Sheng
PY  - 2015/11
DA  - 2015/11
TI  - Structure effects on seismic response of underground cavern in joint network rock mass
BT  - Proceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering
PB  - Atlantis Press
SP  - 1339
EP  - 1347
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccmcee-15.2015.252
DO  - 10.2991/iccmcee-15.2015.252
ID  - Cui2015/11
ER  -