Study on the Equivalence Transformation between Blasting Vibration Velocity and Acceleration

Area of Science:

• Geotechnical Engineering
• Mining Engineering
• Vibrational Analysis

Background:

• Accurate evaluation of blasting vibrations is crucial for safety and efficiency.
• Transforming between particle peak velocity (PPV) and particle peak acceleration (PPA) is challenging due to data inconsistencies and noise.
• Existing conversion methods often lack accuracy.

Purpose of the Study:

• To develop a robust method for transforming blasting vibration data (PPV and PPA).
• To propose accurate equations for the ratio (Ra) of PPV to PPA.
• To investigate factors influencing vibration transformation and optimize blasting designs.

Main Methods:

• Trend term elimination using MATLAB functions.
• Noise reduction through CEEMDAN combined with WD/WDP.
• Development and validation of transformation equations for the PPV/PPA ratio (Ra).

Main Results:

• The proposed method significantly enhances the accuracy of PPV-PPA transformation by effectively removing trend terms and noise.
• A positive power function correlation was found between Ra and blast vibration propagation distance.
• A negative correlation was observed between Ra and maximum charge per delay; Ra values were lower in pre-splitting than bench blasting.

Conclusions:

• The developed transformation method and Ra equations provide a rapid and direct approach for assessing PPV-PPA relationships.
• The findings offer valuable insights for optimizing blasting designs and improving vibration analysis.
• Accurate vibration data transformation is essential for effective geotechnical and mining operations.