Numerical Investigation of the Influence of Roof Fracturing Angle on the Stability of Gob-Side Entry Subjected to Dynamic Loading

Figure 14

Vertical stress distribution in 21304 gob and 21305 panel with different roof fracturing angles: (a) 10°; (b) 15°; (c) 20°; (d) 25°; (e) 30°.

(a)

(b)

(c)

(d)

(e)