Research Article
The Spatio-Temporal Evolution of Overlying Rock Structure and Mine Pressure Behavior in a Short-Distance Coal Seam Face
Figure 12
The 222 working face is opened until the end of mining. (a) The 222 working face for the first weighting. (b) The 222 working face for the 8th weighting. (c) The 222 working face for the 22nd weighting. (d) End of mining in the 222 working face.
(a) |
(b) |
(c) |
(d) |