Table 2 Precursor information of rock failure.
Rock type | The axial strain indicates the time point of failure | The b value indicates the failure time point |
|---|---|---|
0 times complete rock sample | 1.3029 h | 1.2931 h |
90 times complete rock sample | 4.8291 h | 4.8255 h |
0 times slow-steep fracture rock samples | 0.3051 h | 0.2917 h |
