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

<div>The main roof collapses in the synclinal axis and fissure development of the overlying strata. (a) The whole picture of the model after the breakage caving of the main roof. (b) Overall collapse of the main roof. (c) Vertical fissures of the overlying strata.</div>

Advances in Civil Engineering

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Figure 8

Figure 8: Research on Physical Similarity Simulation of Mining Uphill and Downhill at the Large-Angle Working Face 