Numerical Simulation on Selection of Optimal Delay Time for Precise Delay Blasting

Figure 6

Effective stress curves for each case of delay time. (a) The effective stress curve under simultaneous initiation. The effective stress curve of delayed initiation at (b) 9 ms, (c) 12 ms, and (d) 15 ms.

(a)

(b)

(c)

(d)