Research Article
Study on the Large Deformation Characteristics and Disaster Mechanism of a Thin-Layer Soft-Rock Tunnel
Table 4
Uniaxial compressive strength test results.
| | No. | Compressive strength σc (MPa) | Average value (MPa) | Elastic modulus E (GPa) | Average value (GPa) | Poisson’s atio μ | Average value | Type of failure |
| | U30-1 | 89.1 | 74.3 | 11.7 | 11.9 | 0.1 | 0.1 | Shear failure | | U30-2 | 82.8 | 12.5 | 0.1 | Shear failure | | U30-3 | 51.0 | 11.5 | 0.02 | Shear failure |
| | U45-1 | 69.7 | 40.5 | 12.6 | 10.3 | 0.1 | 0.1 | Shear failure | | U45-2 | 30.2 | 10.8 | 0.54 | Shear failure | | U45-3 | 21.5 | 7.4 | 0.003 | Shear failure |
| | U60-1 | 63.0 | 63.0 | 11.9 | 12.3 | 0.1 | 0.08 | Shear failure | | U60-2 | 65.8 | 13.0 | 0.03 | Shear failure | | U60-3 | 60.3 | 12.1 | 0.1 | Shear failure |
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Note. For U30-1, 30 denotes joint inclination and 1 denotes rock number.
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