Study on the Mechanical Relationship among the Backfilling Mining Support, Roof Rock Beam, and Gangue Filling Body in Comprehensive Mechanized Filling Mining Process

Figure 7

The process of mining and filling and the change of rock strata displacement in model II: (a) mining length 8 m, (b) mining length 20 m, (c) mining length 32 m, (d) mining length 40 m, (e) mining length 49 m, (f) mining length 57 m, and (g) mining length 65 m.

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