Research Article
Mechanical Characteristics and Energy Evolution Laws for Red Bed Rock of Badong Formation under Different Stress Paths
Figure 9
The energy evolution laws of b2 rocks under unloading conditions: (a) 2 MPa; (b) 4 MPa; (c) 8 MPa; (d) 16 MPa.
(a) |
(b) |
(c) |
(d) |