Automatic identification method for P-wave and S-wave first arrival in blasting seismic waves

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (5) : 253-262.

SHOCK AND EXPLOSION

Automatic identification method for P-wave and S-wave first arrival in blasting seismic waves

KONG Linghao1,2, YAN Peng*1,2, LIU Xiao1,2, ZHOU Chao1,2, ZHANG Xiangyu1,2, LU Wenbo1,2

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Abstract

Identification of the first arrivals of different waveform components in blasting seismic waves rapidly and correctly is crucial for the analysis of energy and frequency characteristics, wave velocity calculation, precise and control of blasting vibration effects and inversion of rock dynamics parameters. In this paper, by analysing the propagation law and energy and frequency characteristics of blasting seismic waves, improving the existing P-wave first arrivals identification method - STA/LTA algorithm and S-wave first arrivals identification method - eigenfunction method, a new method of automatic identification of first arrivals moments of blasting seismic waves is proposed and verified by carrying out blasting tests. The results show that: compared with the manual identification of P-wave arrival results, the maximum error of P-wave first-to-moment identification in this paper is 0.3ms, and the average error is 0.1ms; the peak value of S-wave first-to-moment identification eigenfunction is more obvious, which can improve the automatic identification efficiency. The recognition method has lower error, can effectively identify the blasting seismic wave P-wave and S-wave first-arrive-moment.

Key words

blasting vibration / first-to-arrive / vibration control / rock blasting

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KONG Linghao1, 2, YAN Peng1, 2, LIU Xiao1, 2, ZHOU Chao1, 2, ZHANG Xiangyu1, 2, LU Wenbo1, 2. Automatic identification method for P-wave and S-wave first arrival in blasting seismic waves[J]. Journal of Vibration and Shock, 2025, 44(5): 253-262

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