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| Second-level index | Key risk factor |
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| A1 Station structure | A12 Absolute settlement value of station structure, |
| A13 Horizontal displacement of the station structure, |
| A15 Differential settlement of station structure deformation joint, |
| A16 Crack width of station structure |
|
| A2 Track structure | A22 Orbital height difference (Vector value), |
| A24 Transverse elevation difference of track, A25 Void amount of track-bed |
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| A3 Power supply system | A31 Area power outage renovation, A32 Circuit failure |
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| A4 Water supply and drainage system | A41 System blocking, A43 Pipeline damage |
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| A5 Ventilation and signal system | A51 Equipment sampling pass rate, |
| A53 Equipment failures, |
| A56 Equipment renewal rate, A57 Equipment pending repair rate |
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| B1 Construction monitoring of existing station | B11 Information monitoring equipment failures, |
| B12 Accuracy rate of feedback real-time data, |
| B14 Horizontal and vertical displacement of retaining pile(wall) and top of slop, B16 Axial force of struts, B17 Anchor tension, |
| B18 Ground settlement, B19 Clearance convergence of shaft support structure, |
| B110 Monitoring hole of groundwater level |
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| B2 New space enclosing structure | B21 Survey spot arrangement spacing, |
| B23 Lateral displacement of space enclosing structure |
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| B3Engineering dewatering | B31 Stratum filtering flow, B33 Sand content control |
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| B4 Foundation pit excavation | B42 Foundation pit excavation plan, B44 Depth of foundation pit |
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| B5 Surrounding rock and soil mass and surrounding environment | B51 Design of station structure, |
| B52 Stratum and geological condition, B53 Site classification, |
| B54 Soil liquefaction grade, B55 Buried depth, |
| B58 Effect of water level reduction on stratum, |
| B59 Impact of surrounding buildings on construction |
|
| B6 Construction technology management of main structure | B61Stiffness and deformation reinforcement of main structure, |
| B62 Stiffness of initial support, |
| B63 Quality of secondary lining, B65 Mechanical operation, |
| B66 Construction personnel management, B67Emergency plan |
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| B7 Green construction | B72 Ground traffic control, B74 Noise control, B75Sewage control, |
| B76 Light pollution control, B77 Dust control, |
| B78 Construction trash control, B79 Impact on business climate |
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