Abstract
Considering viscous resistance and the stiffness of rock layer for bottom, the longitudinal vibration theoretical model for the grouted rock bolts was established, and the acceleration responses for free rock bolts and grouted rock bolts under different boundary conditions were obtained. Based on the theoretical model, analyzed the parameters that have the influence on the bonding quality of rock bolts. The theoretical results were compared with numerical results and experiments, which indicated a satisfactory coincidence among the three. As a result, the theoretical model and numerical results can accurately reflect the vibration characteristics of grouted rock bolts and the propagation laws of elastic wave.
| Original language | English |
|---|---|
| Pages (from-to) | 7-10 |
| Number of pages | 4 |
| Journal | Meitan Xuebao/Journal of the China Coal Society |
| Volume | 33 |
| Issue number | 1 |
| Publication status | Published - Jan 2008 |
Keywords
- Bonding quality
- End reflection
- Nondestructive test
- Rock bolts
- Upper interface reflection