Research Article
Optimization Analysis of Smart Steel-Plastic Geogrid Support for Tunnel
Table 2
Material parameters of anchor.
| d (m) | (kN mā3) | E (GPa) | Length (m) | Longitudinal spacing (m) | Radial spacing (m) | Support lag interval (m) |
| 0.022 | 8 | 210 | 2 | 1.5 | 2.0 | 2.0 |
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