Study on Strength, Deformation and Failure Properties of Hollow Cylindrical Rock Specimens
- DOI
- 10.2991/iceep-17.2017.181How to use a DOI?
- Keywords
- rock mechanics;hollow specimen;marble;strength and deformation;failure
- Abstract
In order to simulate the influence of excavation on the whole strength, deformation and failure of rock mass, uniaxial and pseudo-triaxial compression tests on solid and hollow cylinder specimens of marble without inner pressure were carried out with servo-controlled rock testing machine. The results show that the existence of the hollow has little influence on the uniaxial compressive strength and deformation of the rock, and the internal stress of the specimens tend to be uniformly distributed, resulting in a single section shear slip failure; In the pseudo-triaxial compression test, the strength of the specimen increases linearly with the confining pressure. The existence of the hollow makes the free surface inside the specimen, which contributes to the occurrence of local failure. During the compression process, the material near the hollow first yielded, the aperture was expanding, the effective bearing area decreased, the stress non-uniform distribution, the bearing capacity decreased, the peak deformation of the tunnel specimen was significantly lower than the solid specimen, resulting in the stepped surface.
- 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/).
Cite this article
TY - CONF AU - Yong Gou AU - Hongyan Pei AU - Zhenhua Wu PY - 2017/06 DA - 2017/06 TI - Study on Strength, Deformation and Failure Properties of Hollow Cylindrical Rock Specimens BT - Proceedings of the 2017 6th International Conference on Energy and Environmental Protection (ICEEP 2017) PB - Atlantis Press SP - 1048 EP - 1053 SN - 2352-5401 UR - https://doi.org/10.2991/iceep-17.2017.181 DO - 10.2991/iceep-17.2017.181 ID - Gou2017/06 ER -