Research Article
Study on Combined Energy Absorption Support for Rockburst Disaster Control in Tunnelling
Table 3
Steel material parameters.
| | Material type | Density (kg·m−3) | Yield strength (MPa) | Elastic modulus E (GPa) | Tangent modulus (GPa) | Poisson ratio |
| | Q235 | 7850 | 235 | 200 | 1.18 | 0.3 | | Q345 | 7850 | 345 | 200 | 1.18 | 0.3 |
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