Research Article
A Data-Driven Method for Predicting the Cutterhead Torque of EPB Shield Machine
Table 3
Comparison of scores with different models.
| Line | Geology | Model | Statistic | Training data | Testing data | RMSE | Time (s) |
| Zhengzhou, Line 4, Rings 550–556 | Fine sand, penetration value 23.1, surrounding rock grade VI | LM | 0.81 | 0.78 | 548.3 | 0.88 | SVR | 0.97 | 0.75 | 544.1 | 2.24 | RFM | 0.99 | 0.81 | 497.8 | 1.78 | Luoyang, Line 1, Rings 104–106 | Silty clay, penetration value 14.3, surrounding rock grade V | LM | 0.95 | 0.94 | 122.9 | 0.02 | SVR | 0.92 | 0.88 | 138.3 | 1.33 | RFM | 0.99 | 0.96 | 121.9 | 0.42 | Dalian, Line 5, Rings 47-48 | Moderately weathered limestone, surrounding rock grade V | LM | 0.78 | 0.77 | 259.3 | 0.03 | SVR | 0.94 | 0.81 | 272.7 | 2.77 | RFM | 0.99 | 0.79 | 245.2 | 1.36 |
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