Research Article

Influence of Roadway Cross-Section Shape on Gas Explosion Shock Wave Law in U-Type Ventilation Working Faces

Figure 4

Cloud diagram of shock wave propagation at each moment: (a) t = 33.5 ms; (b) t = 88 ms; (c) t = 140 ms; (d) t = 181 ms.
(a)
(b)
(c)
(d)