Experimental Hazardous Rock Block Stability Assessment Based on Vibration Feature Parameters

Figure 9

Relation between the vibration feature parameters and the stability safety factor: (a) mean frequency and safety factor; (b) center frequency and safety factor; (c) root mean square frequency and safety factor; (d) peak frequency and safety factor; and (e) mean frequency standard deviation and safety factor.

(a)

(b)

(c)

(d)

(e)