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

Figure 11

Pressure nephogram of shock wave at different times (rectangle): (a) t = 0.02 s; (b) t = 0.15 s; (c) t = 0.36 s; (d) t = 0.44 s; (e) t = 0.6 s; (f) t = 0.94 s.

(a)

(b)

(c)

(d)

(e)

(f)