Research Article
Study on Instability Mechanism of Extraction Structure under Undercut Space Based on Thin Plate Theory in Block Caving Method
Table 2
Calculation parameters of equivalent model of extraction structure thin plate.
| | Serial number | Parameter name (unit) | Parameter value |
| | 1 | Equivalent elastic modulus, (GPa) | 3.6 | | 2 | Foundation modulus, (MPa/m) | 27 | | 3 | The inclination of extraction structure, (m) | 80 | | 4 | Equivalent thickness of thin plate, (m) | 16 | | 5 | Poisson’s ratio, | 0.22 | | 6 | Horizontal initial stress in x direction, (MPa) | 11.6 | | 7 | Horizontal initial stress in y direction, (MPa) | 22.9 |
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