Research Article
Prediction Model of Failure Zone in Roadway Sidewall considering the Lithologic Effect of Rock Formation
Table 2
Calculation parameters of roadway.
| | Parameters | Depth
H/m | Density
γ kN/m3 | Thickness
h/m | Stress concentration factor k | Lateral coefficient λ | Cohesion
C/MPa | Friction ϕ/° | Support pressure
/MPa |
| | value | 470 | 25 | 3 | 2 | 0.4 | 0.0392 | 28 | 0.214 (Annular support)
| | 0.056 (Arched support) |
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