Research Article
Influence of Cyclic Impact Loading and Axial Stress on Dynamic Mechanical Properties of Burst-Prone Coal
Table 6
Statistical cumulative number of cyclic impacts.
| | Zhaogezhuang coal (resistant) | Qianqiu coal (prone) | | Specimen number | Cumulative impact times | Axial stress (MPa) | Specimen number | Cumulative impact times | Axial stress (MPa) |
| | ZGZ1-1 | 10 | 8 | QQ1-1 | 5 | 8 | | ZGZ1-2 | 12 | 8 | QQ1-2 | 4 | 8 | | ZGZ1-3 | 15 | 8 | QQ1-3 | 6 | 8 | | ZGZ2-1 | 20 | 5 | QQ2-1 | 6 | 5 | | ZGZ2-2 | 17 | 5 | QQ2-2 | 8 | 5 | | ZGZ2-3 | 19 | 5 | QQ2-3 | 9 | 5 | | ZGZ3-1 | 23 | 2 | QQ3-1 | 11 | 2 | | ZGZ3-2 | 21 | 2 | QQ3-2 | 13 | 2 | | ZGZ3-3 | 26 | 2 | QQ3-3 | 14 | 2 |
|
|
