Experimental Study on Initial Damage Point of Deep Granite under Step Cyclic Loading Method

<div>Data processing step of damage threshold with 10 MPa confining pressure: (a) the stress-strain curves in ascending step cyclic loading under 10 MPa confining pressure; (b) target unloading curve evaluated process; (c) target loading curve evaluated process; (d) initial damage point evaluated process.</div>

Advances in Civil Engineering

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Figure 10

Figure 10: Experimental Study on Initial Damage Point of Deep Granite under Step Cyclic Loading Method 