Roadway Surrounding Rock under Multi-Coal-Seam Mining: Deviatoric Stress Evolution and Control Technology

Figure 7

Deviatoric stress curves of Tailgate 8709 in the mining process of the N8707 coal face in No. 11 coal seam: (a) deviatoric stress curves in coal pillar and solid-coal side; (b) deviatoric stress curves of the roof; (c) deviatoric stress curves of the bottom.

(a)

(b)

(c)