Research Article
Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock Blasting
Figure 6
Damage evolution with different distances between two holes when t = 25 μs. (a) a/2r1 = 5, (b) a/2r1 = 7.5, (c) a/2r1 = 10, and (d) a/2r1 = 12.5.