Model of Overlying Strata Structure in Large Mining Height Excavating Condition and Calculation of Support Working Resistance

<div>Damage mode of overlying rock during the advancement of working face. (a) Working face advanced to 20 m; (b) working face advanced to 70 m; (c) working face advanced to 120 m.</div>

Geofluids

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Figure 2

Figure 2: Model of Overlying Strata Structure in Large Mining Height Excavating Condition and Calculation of Support Working Resistance 