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

<div>Periodic pressure of the main roof. (a) State after the main roof collapses. (b) Fissures and separation development. (c) The scope of the main roof collapses.</div>

Advances in Civil Engineering

fig6

Figure 6

Figure 6: Research on Physical Similarity Simulation of Mining Uphill and Downhill at the Large-Angle Working Face 