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

<div>Typical stress-strain curves under different fixed values and confining pressures: (a) 20%σP and 10 MPa; (b) 40%σP and 10 MPa; (c) 20%σP and 20 MPa; (d) 40%σP and 20 MPa; (e) 20%σP and 30 MPa; (f) 40%σP and 30 MPa.</div>

Advances in Civil Engineering

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Figure 9

Figure 9: Experimental Study on Initial Damage Point of Deep Granite under Step Cyclic Loading Method 