Parameter properties of granite moonstone under unloading condition

DOI

10.2991/iccte-16.2016.20How to use a DOI?

Keywords

unloading, properties, mechanical parameters, strength.

Abstract

In order to get parameter properties of rock mass, a series of representative unloading tests are carried on hard granite moonstone for that it is indispensable to get mechanical parameters and strength parameters for numerical simulation. In the unloading tests, the stress path of decreasing confining pressure along with increasing axial pressure is adopted to be similar to the evacuation of rock mass at depth. The results of tests show as follows: (1) As the cracks development in rock mass, the mechanical parameters and strength parameters is not constant. (2) In the process of unloading, the Poisson’s ration would be risen gradually and the deformation modulus would be decreased little by little. (3) Two strength parameters, the internal cohesion and the internal friction angel are both reduced greatly, compared to that in loading tests.

Copyright

© 2016, 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  - Yinghui Lv
AU  - Yao Xu
PY  - 2016/01
DA  - 2016/01
TI  - Parameter properties of granite moonstone under unloading condition
BT  - Proceedings of the 2016 International Conference on Civil, Transportation and Environment
PB  - Atlantis Press
SP  - 121
EP  - 124
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccte-16.2016.20
DO  - 10.2991/iccte-16.2016.20
ID  - Lv2016/01
ER  -