Study on Roof Breakage-Induced Roadway Coal Burst in an Extrathick Steeply Inclined Coal Seam

Figure 1

(a) Mechanical model for horizontal slice mining of the SICS. (b) Mechanical model for distribution of abutment pressure on the roof and stress of coal-rock in the working face. (c) Stress in the roof triangular zone. (d) Stress in the rectangular coal zone. (e) Stress in the floor triangular zone.

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