Zero moment determination method of millisecond differential blasting based on similarity of high-speed photography image
WANG Yan
ZHANG Ruixin
SUN Jiandong
ZHANG Zhao
MA Saisai
Abstract：Aiming at the problem of determining the detonation zero moment when analyzing the blasting vibration rules in open-pit coal mines,a surface detonator layout plan and an image acquisition system are designed.The image similarity analysis method combining perceptual hashing algorithm and vector norms is used to ascertain the zero moment of detonation.A novel approach is proposed for determining the zero moment of blasting based on the similarity of high-speed photography images captured at the time of detonation.This method enables precise detection of the zero moment of blasting initiation.The findings indicate that this approach effectively solves the issues of time lag or advancement commonly encountered in traditional methods,and enhances the accuracy of zero moment determination to a millisecond-level error range.It provides a useful reference for the unified blasting initiation time in the perception and analysis of blasting vibration propagation,vibration attenuation and energy release law.
Keywords：open-pit blastingperceptual hashing algorithmvector normsinitiation
Publication Date：2024-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 7-11 )