Study on Optimization of Delay Method of Wedge Cut Blasting in Tunnel

Figure 14

Waveform diagram of typical resultant vibration velocity under different delay times: (a) Δ(t) = 1 ms. (b) Δ(t) = 5 ms. (c) Δ(t) = 8 ms. (d) Δ(t) = 10 ms. (e) Δ(t) = 12 ms. (f) Δ(t) = 15 ms.

(a)

(b)

(c)

(d)

(e)

(f)