Research Article
Time-Frequency Analysis and Application of a Vibration Signal of Tunnel Excavation Blasting Based on CEEMD-MPE-HT
Table 2
Energy values of typical seismic wave signals in each frequency band.
| | The frequency distribution | 0–100 Hz | 100–300 Hz | 300–500 Hz | 500–800 Hz |
| | Size of the energy (m2/s2) | Radial seismic wave signal | 1.686 × 10−6 | 1.764 × 10−5 | 0.887 × 10−5 | 2.847 × 10−5 | | Longitudinal seismic wave signal | 1.334 × 10−6 | 1.421 × 10−5 | 0.654 × 10−5 | 2.365 × 10−5 | | Vertical seismic wave signal | 1.027 × 10−6 | 1.243 × 10−5 | 0.542 × 10−5 | 2.149 × 10−5 |
| | Summary of the energy of each frequency band | 4.047 × 10−6 | 4.428 × 10−5 | 2.083 × 10−5 | 7.361 × 10−5 | | Energy ratio of each frequency band to the total energy | 2.850% | 31.016% | 14.590% | 51.560% |
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