New Method to Design Coal Pillar for Lateral Roof Roadway Based on Mining-Induced Stress: A Case Study

Figure 11

Deformation of roof roadway with panel 31100 retreat: (a) Oct 17, 2013; (b) Nov 14, 2013; (c) Dec 13, 2013; (d) Jan 16, 2014.

(a)

(b)

(c)

(d)