Research Article
Analysis for Overburden Destruction on Lateral Boundary of Stope Based on Viscoelastic-Plastic Finite Element Method
Table 1
The parameters of each stratum.
| | Property | E0 (GPa) | E1 (GPa) | η1 (GPa∙d) | η2 (GPa∙d) | f | C (GPa) | © (t/m3) |
| | Joint | 1.0 | 1.5 | 5.2 | 4.5 | 0.45 | 2.0 | 1.25 | | Soft seam (claystone) | 1.4 | 2.1 | 6.5 | 5.3 | 0.55 | 3.0 | 1.35 | | Hard seam (sandstone) | 5.5 | 8.5 | 10.5 | 8.6 | 0.78 | 4.2 | 2.50 | | Caving zone | 0.2 | 0.3 | 0.8 | 0.75 | 0.46 | 0.00 | 1.80 | | Coal | 1.2 | 1.8 | 3.2 | 2.5 | 0.51 | 2.5 | 1.29 | | Floor (packsand) | 4.5 | 6.8 | 12.5 | 10.2 | 0.75 | 4.2 | 2.5 |
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