Research on Failure Characteristics and Zoning Control Technology of Thick-Soft Surrounding Rock for Deep Gob-Side Entry Retaining

Figure 4

Deformation and failure characteristics of surrounding rock. (a) Roof bending and sinking type, (b) roof cutting along filling body, (c) rib spalling type, (d) roof fall type, (e) filling body rotation type, (f) filling body crushing type, (g) roof step type, and (h) roof cutting along coal side.

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