Fracturing of the Soft Rock Surrounding a Roadway Subjected to Mining at Kouzidong Coal Mine

Figure 13

Crack characteristics: (a) 0.12 m, (b) 1.56 m, (c) 2.42 m, (d) 6.12 m, and (e) 7.13 m.

(a)

(b)

(c)

(d)

(e)