Table 5 Calculation results and comparison of surrounding rock pressure.
Calculation methods | Calculation results (kPa) | Parameter description | ||
|---|---|---|---|---|
First | Second | Main | ||
RMR method | 494.5 | SRMR = 26, B = 26m, γ = 25.7 kN m−3 | ||
Terzaghi method | 580.1–796.7 | The height of the soil cover is 31 m, and the height of the stratum arch Hpt = 22.6–31 m | ||
Proposed method | 133.0 | 82.5 | 143.8 | – |
Monitoring values | 87.3 | 61.5 | 157.8 | – |
