Journal
THEORETICAL AND APPLIED FRACTURE MECHANICS
Volume 60, Issue 1, Pages 15-22Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tafmec.2012.06.003
Keywords
Zonal disintegration; Cross-anisotropic; Dynamic unloading; Deep circular tunnel
Categories
Funding
- National Natural Science Foundation of China [51021001, 51078371, 51279218]
- Natural Science Foundation Project of CQ CSTC [CSTC, 2009BA4046]
- Fundamental Research Funds for the Central Universities [CDJZR10205501]
Ask authors/readers for more resources
A mechanical model is proposed to investigate zonal disintegration mechanism of cross-anisotropic rock masses around a deep circular tunnel subjected to dynamic unloading under hydrostatic pressure condition as well as the total elastic stress-field distributions. Effects of unloading rate and dynamic mechanical parameters on the zonal disintegration phenomenon of the surrounding rock masses around a deep circular tunnel as well as the total elastic stress field distributions are taken into account. Numerical computation is carried out. The location, number and size of fractured and non-fractured zones are determined using the Hoek-Brown criterion. It is found from numerical results that the location, number and size of fractured and non-fractured zones significantly depend on unloading rate and dynamic mechanical parameters of deep rock masses. (C) 2012 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available