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<p>In order to explore the vibration response characteristics of liquid oxygen phase change rock breaking, a series of field vibration monitoring experiments at different distances of rock breaking areas are carried out based on practical projects. Based on the measured data, the waveform curve of vibration velocity and peak attenuation characteristics of particle vibration velocity are analyzed, and the propagation law of liquid oxygen cracking vibration is studied. Based on the energy equivalent principle of TNT, the dispersion distribution characteristics of vibration velocity are analyzed, and the prediction model of vibration velocity attenuation which is consistent with the cracking characteristics of liquid oxygen is given. Sym8 wavelet is used to analyze the three dimensional time spectrum characteristics, frequency band energy distribution characteristics and evolution law of vibration signals, and the global distribution characteristics of vibration signals are analyzed with FFT main frequency statistics. The results show that the vibration velocity waveform of liquid oxygen cracking has the phenomenon of bimodal disappearing gradually with the distance. The peak value of particle vibration velocity is dominated by vertical direction and has two stages of steady and jump attenuation with distance. The fitted curve has high reliability, and the predicted value is more consistent with the measured value as the distance increases. The vibration signal energy of the short-distance measurement points in the rock breaking area is mainly distributed in the range of 0–58.59&#xa0;Hz, showing the characteristics of energy accumulation in the three-dimensional time–frequency plane. The vertical vibration energy decays with the intensity of distance and distributes faster to the high frequency band. The main frequency distribution of liquid oxygen cracking vibration signal is significantly affected by oxygen filling and drug embedding depth. The research results provide some theoretical basis and guidance for the study of vibration response characteristics and field application of liquid oxygen phase change rock breaking.</p>

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Study on the Vibration Response Characteristics of the Near-Zone of Liquid Oxygen Transient Phase Change Rock Breaking

  • 期刊论文

  • 发表日期：

    2025年12月8日

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  • Yanbing Wang,
  • Wenhai Zheng,
  • Dairui Fu,
  • Zhen Lei,
  • Renshu Yang

摘要

In order to explore the vibration response characteristics of liquid oxygen phase change rock breaking, a series of field vibration monitoring experiments at different distances of rock breaking areas are carried out based on practical projects. Based on the measured data, the waveform curve of vibration velocity and peak attenuation characteristics of particle vibration velocity are analyzed, and the propagation law of liquid oxygen cracking vibration is studied. Based on the energy equivalent principle of TNT, the dispersion distribution characteristics of vibration velocity are analyzed, and the prediction model of vibration velocity attenuation which is consistent with the cracking characteristics of liquid oxygen is given. Sym8 wavelet is used to analyze the three dimensional time spectrum characteristics, frequency band energy distribution characteristics and evolution law of vibration signals, and the global distribution characteristics of vibration signals are analyzed with FFT main frequency statistics. The results show that the vibration velocity waveform of liquid oxygen cracking has the phenomenon of bimodal disappearing gradually with the distance. The peak value of particle vibration velocity is dominated by vertical direction and has two stages of steady and jump attenuation with distance. The fitted curve has high reliability, and the predicted value is more consistent with the measured value as the distance increases. The vibration signal energy of the short-distance measurement points in the rock breaking area is mainly distributed in the range of 0–58.59 Hz, showing the characteristics of energy accumulation in the three-dimensional time–frequency plane. The vertical vibration energy decays with the intensity of distance and distributes faster to the high frequency band. The main frequency distribution of liquid oxygen cracking vibration signal is significantly affected by oxygen filling and drug embedding depth. The research results provide some theoretical basis and guidance for the study of vibration response characteristics and field application of liquid oxygen phase change rock breaking.