Abstract
The new parameters for describing damage and its evolution in rock are explored to construct damage model of rock fragmentation by blasting. The shock-induced damage experiments are carried out and the ultrasonic signals in the damaged rocks are measured. The results show that the shock-induced damage of rock is related to the attenuation coefficient of sonic wave. Considering the relationship of the attenuation of wave and damage energy dissipation, a new rock damage model is developed for rock blasting. Comparing the experiment data of light-gas gun with the simulating results by the new models, it is verified that the new model can better reveal the dynamic course of rock fragmentation by blasting.
| Original language | English |
|---|---|
| Pages (from-to) | 320-323 |
| Number of pages | 4 |
| Journal | Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering |
| Volume | 20 |
| Issue number | 3 |
| Publication status | Published - May 2001 |
Keywords
- Attenuation coefficient
- Damage model
- Damage variation
- Dynamic loading
- Rock blasting
- Sonic wave measurement
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Yang, J., Gao, W., & Jin, Q. (2001). Experiment on dynamic damage property of rock and new damage model for rock fragmentation by blasting. Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 20(3), 320-323.