Study on Stress Distribution Law of High-Efficiency Paste Backfilling Working Face with Solid Waste in Thick Coal Seam

Figure 8

Nephogram of stress distribution 300 m away from the cut hole in E1302 working face under a backfilling mining cycle. (a) Vertical stress distribution before cutting the first coal. (b) Vertical stress distribution before cutting the second coal. (c) Vertical stress distribution before backfilling. (d) Vertical stress distribution before the next coal cutting after backfilling.

(a)

(b)

(c)

(d)