Mechanism and Safety Mining Technology of Overall Instability-Induced Rockbursts of Multi-Coal Seam Spatially Isolated Working Face

Figure 9

Stress evolution cloud diagram after mining at the working face. (a) Vertical stress cloud map of the adjacent mine working face after hollowing. (b) Vertical stress cloud map of the (4-5) 02 working face after hollowing. (c) Vertical stress cloud map of the (4-5) 04, 06 working face after hollowing.

(a)

(b)

(c)