Mechanism of Coal Burst and Prevention Practice in Deep Asymmetric Isolated Coal Pillar: A Case Study from YaoQiao Coal Mine

Figure 14

Stress change curve of coal and rock mass in isolated coal pillar area: (a) coal seam stress distribution in the coal pillar area (strike profile); (b) stress distribution in track roadway roof (tendency profile); (c) stress distribution in return roadway roof (tendency profile).

(a)

(b)

(c)