Abstract

To study the influence of smooth and rough joint on stress wave propagation in rock mass and the mechanical properties of jointed rock, experimental research was carried out using Split Hopkinson Pressure Bar. The influence of fractal dimension of rock joints on stress wave propagation was studied. The results showed that the transmission coefficients and equivalent stiffness of the smooth joints rock specimen reduce very little compared to the intact rock specimen, which indicates that the smooth joints have very little influence on stress wave propagation in the experiment. The transmission coefficient and equivalent stiffness of joint rock specimen were influenced by the difference of joint forms. The bigger of the joint roughness (fractal dimension) are, the smaller of the transmission coefficient and stiffness of the rock joint specimen.

Details

Title
The Effects of Joint Roughness on Stress Wave Propagation Based on Projection Cover Method
Author
Li, Miao 1 ; Qiao, Lan 1 ; Zhou, Ming 1 

1  School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China 
Publication year
2018
Publication date
Jan 2018
Publisher
IOP Publishing
ISSN
17551307
e-ISSN
17551315
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/1755-1315/108/4/042021
ProQuest document ID
2558457922
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.