Table 3 Support structure parameters.
Structural unit | Elastic modulus /GPa | Poisson’s ratio | Preload /kN | Yield strength /GPa | Cross-section area /mm2 |
|---|---|---|---|---|---|
Anchor rod | 200 | 0.3 | – | 0.5 | 380 |
Anchor cable | 195 | 0.3 | 200 | 1.58 | 267 |
Anchor net | 20 | 0.25 | – | – | – |
π-shaped steel shed | 25 | 0.3 | – | – | – |
