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

Figure 10

Periodic pressure of the main roof in the downhill mining section. (a) The whole picture of the mode. (b) Separation closure. (c) Vertical fissures of the overlying strata. (d) Before the bending caving of the main roof. (e) After the bending caving of the main roof.

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(b)

(c)

(d)

(e)