Research on Physical Similarity Simulation of Mining Uphill and Downhill at the Large-Angle Working Face

<div>Periodic pressure of the main roof in the downhill mining section. (a) The whole picture of the model after the breakage caving of the main roof. (b) Collapse of the main roof. (c) The state of the overlying strata.</div>

Advances in Civil Engineering

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Figure 9

Figure 9: Research on Physical Similarity Simulation of Mining Uphill and Downhill at the Large-Angle Working Face 