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Shock and Vibration
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2019
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Article
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Tab 1
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Research Article
Energy Evolution and Acoustic Emission Characteristics of Sandstone Specimens under Unloading Confining Pressure
Table 1
Experiment results of rock specimens under different confining pressures.
Serial number
σ
1
–
σ
3
(MPa)
σ
3
(MPa)
S5-1
121.6
5
S10-1
145.6
10
S15-1
178.5
15
S20-1
194.6
20