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Target layer | First layer | Second layer | Third layer |
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Risk of slurry shield construction | Personnel risk (A) | Professional skills and experience (A1) | Working experience (A11) |
Safety skills (A12) |
Emergency capacity (A13) |
Safety consciousness (A14) |
Physical condition (A2) | Working strength (A21) |
Physical health (A22) |
Mental health status (A3) | Sense of discipline (A31) |
Working pressure (A32) |
Mechanical risk (B) | Mechanical use status (B1) | Mechanical failure condition (B11) |
Mechanical aging condition (B12) |
Mechanical wear condition (B13) |
Mechanical qualification status (B2) | Qualification rate of installation (B21) |
Qualification rate of maintenance (B22) |
Material risk (C) | Material quality status (C1) | Physical property (C11) |
Dimensional discrepancy (C12) |
Material storage status (C2) | Storage conditions (C21) |
Stacking condition (C22) |
Method risk (D) | Security system (D1) | Integrity degree (D11) |
Executive capacity (D12) |
Implementation effect (D13) |
Construction schemes (D2) | Working method (D21) |
Drawings change (D22) |
Environmental risk (E) | Geological environment (E1) | Geological conditions (E11) |
Geological disaster situation (E12) |
Social environment (E2) | Surrounding traffic conditions (E21) |
Settlement level of surrounding buildings (E22) |
Underground pipeline relocation (E23) |
Site environment (E3) | Safety facilities (E31) |
Water pollution (E32) |
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