Theoretical Study and Numerical Simulation Research on the Effect of Coal-Rock Interface on Multistaged Fracturing in the Roof of Outburst Coal Seam

Figure 5

Elasticity modulus evolution of numerical model No. 2. (a) Step 29-1. (b) Step 33-7. (c) Step 33-8. (d) Step 33-12. (e) Step 33-15. (f) Step 33-19.

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(b)

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(f)