Blasting Impact Simulation Test and Fragmentation Distribution Characteristics in an Open-Pit Mine

Figure 7

Failure process of the coal specimens under the impact load. (a) t = 0 ms. (b) t = 0.07 ms. (c) t = 0.14 ms. (d) t = 0.21 ms. (e) t = 0.28 ms. (f) t = 0.35 ms. (g) t = 0.42 ms. (h) t = 0.50 ms. (i) t = 0.57 ms. (j) t = 0.64 ms. (k) t = 0.71 ms. (l) t = 0.78 ms. (m) t = 0.85 ms. (n) t = 0.92 ms. (o) t = 1.00 ms. (p) t = 1.07 ms. (q) t = 1.14 ms. (r) t = 1.21 ms. (s) t = 1.78 ms. (t) t = 2.36 ms. (u) t = 2.86 ms.

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