Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model

Figure 9

Failure and movement of overlying strata during mining: (a) open-off cut, (b) working face mined to 40 m, (c) working face mined to 80 m, (d) working face mined to 100 m, (e) working face mined to 150 m, and (f) working face mined to 200 m.

(a)

(b)

(c)

(d)

(e)

(f)