Table 4 Numerical simulation of material properties of each rock layer.
From: Study on the in-situ modified support method of roadway surrounding rock under vertical impact load
Lithology | Density/kg/m3 | Tensile strength/MPa | Modulus of elasticity/GPa | Shear modulus/GPa | Poisson’s ratio | Cohesion/MPa | Angle of internal friction/° | |
|---|---|---|---|---|---|---|---|---|
Siltstone | 2467 | 2.33 | 21.26 | 8.50 | 0.25 | 16.22 | 31.74 | |
Fine sandstone | 2688 | 3.17 | 34.06 | 14.07 | 0.21 | 21.38 | 28.86 | |
Coarse sandstone | 2543 | 0.43 | 2.58 | 1.09 | 0.02 | 2.16 | 30.00 | |
Sandy mudstone | 2546 | 2.42 | 11.20 | 4.41 | 0.27 | 5.42 | 30.41 | |
B42 coal seam | 1388 | 1.97 | 2.90 | 2.01 | 0.21 | 3.81 | 37.49 | |
B41 coal seam | 1374 | 2.02 | 7.49 | 2.88 | 0.25 | 3.81 | 37.49 | |
B3 coal seam | 1356 | 1.91 | 2.10 | 2.03 | 0.24 | 3.56 | 35.00 | |
B2 coal seam | 1640 | 2.15 | 2.50 | 1.91 | 0.25 | 4.70 | 29.00 | |
B1 coal seam | 1303 | 2.02 | 2.20 | 1.12 | 0.23 | 4.50 | 31.00 | |
Equivalent surrounding rock region | 5000 | 10.00 | 100.00 | 30.00 | 0.25 | 40.00 | 20.00 | |
