Table 3
Quantification results of multi-scale indicator collection.
| Indicator category | Indicator name | Data source | Quantification method / range | Applicable section |
|---|---|---|---|---|
| Geological Dimension | Surrounding Rock Classification | Geological Radar Forecast | Class IV; Lateral variation approx. 12% | ZK19+100 ∼ ZK19+180 |
| Geological Dimension | Stratigraphic Structure Trend | Geotechnical Survey Report | Analyzed by radar image reflection layers | Entire tunnel section |
| Predictive Dimension | Ground Settlement Value | Numerical Simulation (FLAC3D) | Maximum settlement approx. 8.7 mm | ZK19+100 ∼ ZK19+180 |
| Predictive Dimension | Surface Displacement Trend | Numerical Simulation (FLAC3D) | Deformation trend matches monitoring data | Simulation area |
| Construction Dimension | Excavation Sequence | Design File / On-site Construction | Three-step method (upper, middle, lower benches) | Entire construction zone |
| Construction Dimension | Initial Support Parameters | Design Documentation | Steel arch + shotcrete, K30 reinforcement | Entire tunnel section |
| Monitoring Dimension | Deep Displacement Monitoring | Inclinometer / Tiltmeter Data | Peak displacement approx. 5.2 mm | Junction of subgrade and face |
| Environmental Dimension | Water Level Variation | Water Level Sensor | Water table drop approx. 0.6 m | Adjacent influence zone |
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