Study on the Creep Characteristics of Sericite Schist in the Northwest of Hubei Province

DOI

10.2991/iceep-17.2017.20How to use a DOI?

Keywords

Schist; Creep; Saturated Softening; Time dependent deformation; Constitutive Model.

Abstract

This study explores the creep behaviors of schist in different water contents and establish the creep model and its constitutive equations. Firstly, the time-dependent deformation regularity of surrounding rock was studied based on the sericite schist tunnel construction in northwest area of Hubei Province of China. Then rock samples were taken and shear creep tests were carried out along the direction of schistosity plane in natural and saturated states. Based on the in-situ and laboratory tests results, a viscoelastic-plastic creep model was constructed through model identification and introducing a nonlinear rheological component. Finally, parameters of the creep model were obtained by multiple regression and back analysis and the rationality of the creep model was verified by comparing with the experimental data.

Copyright

© 2017, 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/).

Download article (PDF)

TY  - CONF
AU  - Shang Ge Liu
AU  - Zhen Li
AU  - Xiu Wen Yin
PY  - 2017/06
DA  - 2017/06
TI  - Study on the Creep Characteristics of Sericite Schist in the Northwest of Hubei Province
BT  - Proceedings of the 2017 6th International Conference on Energy and Environmental Protection (ICEEP 2017)
PB  - Atlantis Press
SP  - 117
EP  - 121
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceep-17.2017.20
DO  - 10.2991/iceep-17.2017.20
ID  - Liu2017/06
ER  -