Research Article
Experimental Study on Mechanical Properties and Acoustic Emission Characteristics of Water Bearing Sandstone under Stable Cyclic Loading and Unloading
Table 2
Test results of rock samples under uniaxial cyclic loading and unloading.
| Test number | Lower stress limit (MPa) | Upper stress limit (MPa) | Cycle number (time) | Average cycle number (time) | Strain of rock failure (10ā3) | Average strain of rock failure (10ā3) |
| S-1-1 | 5 | 35 | 2 | 3.8 | 7.17 | 7.402 | S-1-2 | 5 | 7.48 | S-1-3 | 3 | 7.42 | S-1-4 | 5 | 7.55 | S-1-5 | 4 | 7.39 |
| S-2-1 | 5 | 33.5 | 19 | 19.6 | 6.72 | 6.812 | S-2-2 | 19 | 6.92 | S-2-3 | 23 | 6.84 | S-2-4 | 17 | 6.76 | S-2-5 | 20 | 6.82 |
| S-3-1 | 5 | 32 | 43 | 38.4 | 6.41 | 6.494 | S-3-2 | 33 | 6.60 | S-3-3 | 37 | 6.57 | S-3-4 | 40 | 6.46 | S-3-5 | 39 | 6.43 |
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