Research Article
Experimental Investigations on Electrical Charge of Precracked Rock Specimens under Uniaxial Compression
Table 2
Charge accumulation for precracked sandstone samples.
| | Sample | Precrack inclination angle | Charge accumulation at first step (104 pC) | Time at first step (s) | Final charge accumulation (104 pC) | Time at total charge accumulation (s) |
| | Sample 1 | 0 | 0.21 | 253 | 3.04 | 561 | | Sample 2 | | 0.46 | 263 | 3.28 | 581 | | Sample 3 | | 0.57 | 272 | 4.09 | 792 | | Sample 4 | | 0.29 | 277 | 0.97 | 662 | | Sample 5 | | 0.42 | 283 | 1.17 | 523 |
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