Research Article
Numerical Simulation of the Stress Field in Repeated Mining of Coal Seams Based on In Situ Stress Measurement
Figure 2
Relationship between σcm/σ1 and GSI under different friction coefficients. (a) μ = 0.3. (b) μ = 0.4. (c) μ = 0.5. (d) μ = 0.6. (e) μ = 0.7. (f) μ = 0.8.
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| (b) |
| (c) |
| (d) |
| (e) |
| (f) |