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- Title
Study on the Equivalence Transformation between Blasting Vibration Velocity and Acceleration.
- Authors
Yu, Chong; Wu, Jiajun; Li, Haibo; Ma, Yongan; Wang, Changjian
- Abstract
The evaluation of blasting vibrations primarily hinges on two physical quantities: velocity and acceleration. A significant challenge arises when attempting to reference the two types of vibration data in relation to one another, such as different types of seismometers, noise, etc., necessitating a method for their equivalent transformation. To address this, a transformation method is discussed in detail with a case study, and equations for the ratio (Ra) of the particle peak velocity (PPV) to the particle peak acceleration (PPA) are proposed. The findings are twofold: (1) The conventional data conversion processes often suffer from low accuracy due to the presence of trend terms and noise in the signal. To mitigate this, the built-in MATLAB function is used for trend term elimination, complemented by a combined approach that integrates CEEMDAN with WD/WDP for noise reduction. These significantly enhance the accuracy of the transformation. (2) This analysis reveals a positive power function correlation between Ra and the propagation distance of the blast vibrations, contrasted by a negative correlation with the maximum charge per delay. Intriguingly, the Ra values observed in pre-splitting blasting operations are consistently lower than those in bench blasting. The established Ra equations offer a rapid, direct method for assessing the transformation between the PPV and PPA, providing valuable insights for the optimization of blasting design.
- Subjects
ACCELERATION (Mechanics); BLASTING; PARTICLE acceleration; NOISE control; VELOCITY; BLAST effect; BLAST waves
- Publication
Sensors (14248220), 2024, Vol 24, Issue 6, p1727
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s24061727