|
| Target layer | First layer | Weight | second layer | Weight | The third layer | Weight |
|
| Risk of slurry shield construction | Personnel risk (A) | 0.27 | Professional skills and experience (A1) | 0.56 | Working experience (A11) | 0.38 |
| Safety skills (A12) | 0.20 |
| Emergency capacity (A13) | 0.18 |
| Safety consciousness (A14) | 0.24 |
| Physical condition (A2) | 0.24 | Working strength (A21) | 0.59 |
| Physical health (A22) | 0.41 |
| Mental health status (A3) | 0.20 | Sense of discipline (A31) | 0.66 |
| Working pressure (A32) | 0.34 |
| Mechanical risk (B) | 0.25 | Mechanical use status (B1) | 0.41 | Mechanical failure condition (B11) | 0.48 |
| Mechanical aging condition (B12) | 0.22 |
| Mechanical wear condition (B13) | 0.30 |
| Mechanical qualification status (B2) | 0.59 | Qualification rate of installation (B21) | 0.42 |
| Qualification rate of maintenance (B22) | 0.58 |
| Material risk (C) | 0.14 | Material quality status (C1) | 0.52 | Physical property (C11) | 0.63 |
| Dimensional discrepancy (C12) | 0.37 |
| Material storage status (C2) | 0.48 | Storage conditions (C21) | 0.46 |
| Stacking condition (C22) | 0.54 |
| Method risk (D) | 0.11 | Security system (D1) | 0.34 | Integrity degree (D11) | 0.26 |
| Executive capacity (D12) | 0.44 |
| Implementation effect (D13) | 0.30 |
| Construction schemes (D2) | 0.66 | Work method (D21) | 0.42 |
| Drawings change (D22) | 0.58 |
| Environmental risk (E) | 0.23 | Geological environment (E1) | 0.47 | Geological conditions (E11) | 0.65 |
| Geological disaster situation (E12) | 0.35 |
| Social environment (E2) | 0.22 | Surrounding traffic conditions (E21) | 0.09 |
| Settlement level of surrounding buildings (E22) | 0.49 |
| Underground pipeline relocation (E23) | 0.42 |
| Site environment (E3) | 0.31 | Safety facilities (E31) | 0.63 |
| Water pollution (E32) | 0.37 |
|
