Research Article
Numerical Simulation Research and Application of Support Design of Broken Rock Mass in Submarine Gold Mine
Table 2
Comparison of classification results of three rock mass evaluation methods.
| | Position | RMR | Q | GSI | | Grade | Description | Stability | Grade | Description | GSI value |
| | −200 m | Ⅳ | Bad | (2.5 m span) 10 hr | Ⅳ | Very bad | 39 (36–42) | | −240 m | Ⅳ | Bad | (2.5 m span) 10 hr | Ⅳ | Very bad | 39 (36–42) | | −280 m | Ⅳ | Bad | (2.5 m span) 10 hr | Ⅳ | Very bad | 44 (45–53) | | −320 m | Ⅳ | Bad | (2.5 m span) 10 hr | Ⅳ | Very bad | 47 (45–53) | | −360 m | Ⅲ | Not very bad | (5 m span) 7 days | Ⅲ | Bad | 56 (50–70) | | −400 m | Ⅲ | Not very bad | (5 m span) 7 days | Ⅲ | Bad | 56 (50–70) | | −440 m | Ⅲ | Not very bad | (5 m span) 7 days | Ⅲ | Bad | 63 (50–70) |
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