Research on the Rock Pressure Behavior at Close-Distance Island Working Faces under Deep Goaf

Figure 10

Trend of the plastic zone in the inclination direction: (a) the working face advances 80 m, (b) the working face advances 130 m, (c) the working face advances 180 m, and (d) the working face advances 240 m.

(a)

(b)

(c)

(d)