Research to Blasting Vibration Distribution of an Open Pit Mine Based on Wavelet Packet Theory

Abstract:

As mining production developing, the deformation is gradually increasing in the northwest side of the surface mine. The blasting vibration of daily production is influence on the slope. Through decomposing, restructuring and analyzing the blasting vibration signals of different elevations and explosion distances, we got that the seismic wave energy was mainly distributed low frequency range, usually less in 20Hz and that with the explosion distance increasing, the high-frequency signal energy would be lost, especially when low-frequency signal energy below 10Hz low-frequency become into the main part of the energy. As explosion (center) distance increases, the signal energy is concentrated in the low frequency. Whereas, with the elevation increasing, the seismic wave energy will move to high frequency and has a homogenizing tendency; the percentage of the low frequency energy will be decreased relatively.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 1547-1555
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.1547
• Online since: October 2011
• Authors: Yi Yang, Wei Sun, Shu Fen Li
• Keywords: Blasting Vibration Signal, Energy Feature, Open-Pit, Wavelet Packet Theory

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DOI: 10.1109/18.57199

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