Research Article
Failure Behavior and Energy Storage and Release of Hard Coal under Different Static and Dynamic Loading States
Table 1
Sample grouping and loading situation.
| Number | Test method | Dynamic loading | Static loading |
| B-1 B-2 C-7 F-1 F-3 F-4 D-1 | Dynamic compressive | None | D-3 D-4 D-5 E-1 E-2 E-3 E-4 E-7 | Dynamic compressive | 60% of the static compressive strength | A-1 A-3 A-6 A-7 | Dynamic tensile | None | B-4 B-5 B-6 B-7 | Dynamic tensile | 30% of the static tensile strength | C-1 C-2 C-5 C-6 | Dynamic tensile | 60% of the static tensile strength | Z1 Z2 Z3 Z4 Z5 Z6 F1 F2 F3 F4 F6 N1 N2 N3 N4 | None | Static compressive | S1 S2 S3 | None | Static tensile |
|
|