Research Article
Study on Stability of Tunnel Surrounding Rock and Precipitation Disaster Mitigation in Flowing Sand Body
Table 3
Physical and mechanical parameters of sand layer.
| | Permeability coefficient (cm/s) | Poisson’s ratio | Void ratio | Cohesion (kPa) | Internal friction angle (°) | Modulus of elasticity (MPa) | Density (kg/m3) |
| | 0.20 | 0.42 | 3.0 | 25.0 | 20.5 | 1547 |
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