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. 2025 Feb 25;15(1):6721.
doi: 10.1038/s41598-025-86682-9.

Analysis of the characteristics of blasting seismic wave induced by explosive blasting with different coupling medium

Tong Li  1   2   3 , Li Song  4   5 , Ming Chen  3 , Bo-Wen Guo  1   2 , Bing Fan  1   2 , Shan-Shan Cui  1   2
Affiliations

Analysis of the characteristics of blasting seismic wave induced by explosive blasting with different coupling medium

Tong Li et al. Sci Rep. .

Abstract

To clarify the influence of blast-induced seismic wave characteristics due to borehole coupling medium changes is an important guiding significance for blast vibration control. The energy calculation method of blasting seismic wave was derived and the influence of blasting source factors on seismic wave spectral characteristics was investigated. Then, the energy, composition and attenuation difference of seismic wave induced by explosive blasting with different coupling medium were compared and analyzed. Finally, experiments were carried out to verify analysis. The results show that the energy of blasting seismic wave is related to coupling medium, and the energy of water-coupled blasting induced seismic wave is higher than that of air-coupled blasting. The difference of seismic wave energy between water-coupled blasting and air-coupled blasting is not constant and influenced by rock, explosive categories and decoupling charge coefficient. The existence of water makes seismic wave have richer low-frequency components, and the main frequency is also lower than that of air-coupled blasting. In the process of propagation, air-coupled blasting attenuates faster, and the energy difference of seismic wave between water-coupled blasting and air-coupled blasting increases exponentially with propagation distance increase. The research results can provide reference for the safety control of water-rich rock blasting.

Keywords: Blast-induced seismic wave; Coupling medium; Rock blasting; Seismic wave energy; Spectral characteristic.

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Conflict of interest statement

Declarations. Competing interests: The authors declare no competing interests.

Figures

Fig. 1
Fig. 1
Schematic of wave propagation after blasting.
Fig. 2
Fig. 2
Schematic diagram of blasting seismic wave based on wave theory and vibration theory.
Fig. 3
Fig. 3
Seismic wave energy ratio of blasting with different coupling medium.
Fig. 4
Fig. 4
Triangular load spectrum with different rise time.
Fig. 5
Fig. 5
Triangular load spectrum with different fall time.
Fig. 6
Fig. 6
Spectrogram of vibration wave excited by spherical charge with different elastic boundary radius.
Fig. 7
Fig. 7
Schematic diagram of concrete bench and borehole layout.
Fig. 8
Fig. 8
Typical blasting vibration time-history curves.
Fig. 9
Fig. 9
Vibration velocity spectrum curve when the charge is 5 g.
Fig. 10
Fig. 10
Vibration velocity spectrum curve when the charge is 10 g.
Fig. 11
Fig. 11
Relative energy distribution of signal frequency bands at different measuring points.
See this image and copyright information in PMC

References

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