The Spatio-Temporal Evolution of Overlying Rock Structure and Mine Pressure Behavior in a Short-Distance Coal Seam Face

Figure 9

The 2301 working face is opened until the end of mining. (a) The 2301 working face for the first weighting. (b) The 2301 working face for the 7^th weighting. (c) The 2301 working face for the 19^th weighting. (d) End of mining in the 2301 working face.

(a)

(b)

(c)

(d)