Abstract
Fracture and ground vibration of rock subjected to different decoupling decked charges are investigated based on the numerical simulation. The dynamic pressure value is studied, which demonstrates that simulation of fracture zone is feasible. Attenuation index of dynamic pressure is 2.06, 2.05 and 1.93 for air, water and sand intervals respectively. The small attenuation of sand interval results in the large ground vibration. The predicted vertical vibration waveform and peak particle velocities (PPV) in far-field are in agreement with the monitoring results. The results show that the air and water decked charges can improve the effect of rock fracture in near-field and reduce ground vibration in far-field.
| Original language | English |
|---|---|
| Pages (from-to) | 13-18 |
| Number of pages | 6 |
| Journal | Journal of Beijing Institute of Technology (English Edition) |
| Volume | 21 |
| Issue number | 1 |
| Publication status | Published - Mar 2012 |
Keywords
- Finite element
- Fracture
- Numerical simulation
- Rock blasting
- Vibration effect