Table 4 Principal component loadings, eigenvalues, and variance contributions.
Monitoring type | Principal component analysis | |
|---|---|---|
PC1 (52.8%) | PC2 (21.4%) | |
Sedimentation (mm) | 0.1368 | 0.5088 |
Fissure (mm) | − 0.4203 | 0.0421 |
Horizontal Displacement (mm) | 0.3193 | − 0.4504 |
Tilt (mm) | 0.4309 | 0.0567 |
Seepage (L/min) | − 0.0168 | 0.6338 |
Stress (Mpa) | 0.3922 | 0.2435 |
Loading (kN) | − 0.2621 | − 0.1391 |
Soil-displacement (mm) | 0.3980 | − 0.2139 |
Water-level (m) | 0.3686 | 0.0850 |
Eigenvalues | 4.7479 | 1.9290 |
Rate of variance/% | 52.7546 | 21.4329 |
Rate of cumulative variances/% | 52.7546 | 74.1876 |
