Research Article
The Construction Countermeasures of Shallow-Buried Small Spacing Tunnel Undercrossing Cultural Relic Buildings: A Case Study
Table 2
Calculation parameters of surrounding rock.
| | Surrounding rock | Modulus of deformation (MPa) | Poisson’s ratio | Volumetric weight (kN/m3) | Friction angle (°) | Cohesion (MPa) |
| | Quaternary residual slope deposit | 15 | 0.37 | 18 | 15 | 0.03 | | Medium weathered marlstone | 3800 | 0.31 | 22 | 35 | 0.5 | | Advanced pipe shed | 20000 | 0.25 | 24 | 50 | 1.5 |
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