Study on Mechanical Properties and Damage Evolution Law of Secondary Destruction Induced by Simultaneous Unloading after the Peak of the Curve of Sandstone

<div>Stress-time rupture relation diagram. Change law of the stress-time curve of surrounding rock at (a) 5 MPa, (b) 10 MPa, (c) 20 MPa, (d) 30 MPa, and (e) 40 MPa.</div>

Shock and Vibration

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Figure 6

Figure 6: Study on Mechanical Properties and Damage Evolution Law of Secondary Destruction Induced by Simultaneous Unloading after the Peak of the Curve of Sandstone 

Figure 6 | Study on Mechanical Properties and Damage Evolution Law of Secondary Destruction Induced by Simultaneous Unloading after the Peak of the Curve of Sandstone 