Research Article
Model of Overlying Strata Structure in Large Mining Height Excavating Condition and Calculation of Support Working Resistance
Table 3
The physical and mechanical property parameters of the numerical simulation experimental model coal.
| Serial number | Lithologic characters | Thickness/m | Bulk density(kg/m3) | Volume modulus (GPa) | Shear modulus (GPa) | Internal friction angle/° | Cohesion (MPa) | Tensile strength (MPa) |
| 15 | Grit stone | 20.0 | 2580 | 8.4 | 3.72 | 37 | 8.27 | 6.22 | 14 | Fine sandstone | 13.4 | 2580 | 7.1 | 2.91 | 37 | 5.45 | 4.06 | 13 | Moderate coarse sandstone | 3.8 | 2580 | 9.4 | 6.76 | 40 | 6.63 | 5.27 | 12 | Grit stone | 5.4 | 2580 | 8.4 | 3.72 | 37 | 8.27 | 6.22 | 11 | Fine sandstone | 11.4 | 2580 | 7.1 | 2.91 | 37 | 5.45 | 4.06 | 10 | Coal seam | 1.22 | 1400 | 7.22 | 1.8 | 28 | 2.82 | 3.13 | 9 | Sandy shale | 5.22 | 2420 | 4.2 | 2.91 | 35 | 4.52 | 2.47 | 8 | Coal seam | 0.96 | 1400 | 7.2 | 1.8 | 28 | 2.82 | 3.13 | 7 | Sandy shale | 5.21 | 2420 | 4.2 | 2.91 | 35 | 4.52 | 2.47 | 6 | Fine sandstone | 1.60 | 2580 | 7.1 | 2.91 | 37 | 5.45 | 4.06 | 5 | Sandy shale | 3.10 | 2420 | 4.2 | 2.91 | 35 | 4.52 | 2.47 | 4 | Medium sandstone | 9.20 | 2580 | 9.6 | 4.7 | 32 | 7.20 | 5.21 | 3 | Grit stone | 9.00 | 2580 | 8.4 | 3.72 | 37 | 8.27 | 6.22 | 2 | Fine sandstone | 2.30 | 2580 | 7.1 | 2.91 | 37 | 5.45 | 4.06 | 1 | Sandy shale | 0.90 | 2420 | 4.2 | 2.91 | 35 | 4.52 | 2.47 | | Coal seam | 5.70 | 1400 | 7.2 | 1.8 | 28 | 2.82 | 3.13 |
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