Research Article

Analysis of Mechanical and Acoustic Emission Characteristics of Rock Materials with Double-Hole Defects Based on Particle Flow Code

Figure 9

Failure modes of numerical models of double-hole defective rocks with different α. (a) α = −90°, (b) α = −60°, (c) α = −30°, (d) α = 0°, (e) α = 30°, (f) α = 60°, and (g) α = 90°.
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