Research Article
Experimental Study of Prevention and Control of Rock Burst in Steeply Inclined Coal Seams by Mining Sequence and Filling
Table 3
The parameters of numerical simulation.
| | Coal & rock | Density (kg/m3) | Tensible strength (MPa) | Cohesion (MPa) | Elastic modulus (GPa) | Shear modulus (GPa) | Friction angle (°) | Poisson ratio |
| | B6 roof | 2478 | 5.70 | 7.00 | 2.64 | 1.03 | 28.5 | 0.28 | | B3+6 coal | 1336 | 1.20 | 2.40 | 0.196 | 0.081 | 27.0 | 0.21 | | Rock pillar | 2509 | 3.99 | 3.26 | 1.53 | 0.603 | 30.2 | 0.27 | | B1+2 coal | 1318 | 1.32 | 2.40 | 0.183 | 0.075 | 31.5 | 0.22 | | B1 floor | 2478 | 5.70 | 7.00 | 2.64 | 1.03 | 28.6 | 0.28 | | Yellow sand | 1790 | 0 | 0.01 | 0.002 | 0.001 | 10.5 | 0.21 |
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