Study on the Prediction of the Height of Two Zones in the Overlying Strata under a Strong Shock

Figure 3

Azimuth rose diagram of overlying rock fractures.

(a) 2301 working face stoping ends 1# hole

(b) 2301 working face stoping ends 2# hole

(c) 222 working face stoping ends 1# hole

(d) 222 working face stoping ends 2# hole