Stability Control Mechanism of High-Stress Roadway Surrounding Rock by Roof Fracturing and Rock Mass Filling

Figure 12

The deformation rules and fracture characteristics of roof strata under different roof fracturing conditions. (a) Nonfracturing roof. (b) 5° roof fracturing angle. (c) 10° roof fracturing angle. (d) 15° roof fracturing angle. (e) 20° roof fracturing angle.

(a)

(b)

(c)

(d)

(e)