矿产保护与利用2024，Vol.44Issue(4)：29-40,12.DOI:10.13779/j.cnki.issn1001-0076.2024.04.004
基于FSWT算法的某露天矿山边坡爆破振动传播规律研究
Study on the Propagation Law of Blasting Vibration in an Open-pit Mine Slope Based on FSWT Algorithm
摘要
Abstract
In order to master the propagation law of blasting vibration signals of open-pit mine slope under complex conditions,the blasting vibration data measured by Jianshan phosphate mine slope was taken as the research object.The frequency slice wavelet transform(FSWT)and Hilbert-Huang transform(HHT)algorithms were used to analyze the influence of blasting center distance and slope elevation amplification effect on the energy distribution and propagation law of vibration wave.The results showed that when the propagation distance of blasting vibration wave was close,the energy rose and then decreased with time,and the energy distribution was not dense.When the propagation distance of the vibration wave was far,the energy rose slowly and the distribution was relatively concentrated.The vibration energy at the bottom of the slope was mainly concentrated in the high frequency band of 93.75～125 Hz and contained a large amount of high frequency energy,and the vibration energy at the top was mainly concentrated in the low frequency band of 0～46.87 Hz and contained a large amount of low frequency energy.The energy proportion of No.3 machine in 1972 platform in the frequency range of 0～46.87 Hz was 69.45% on average,while those of No.1 and No.2 machines were 51.37% and 42.55% respectively.The former was 18.08 and 26.9 percentage points higher than the latter two respectively.The explosion center distance of No.4 machine was farther than that of No.3 machine,and its low-frequency energy should be greater than that of No.3 machine.However,the average energy proportion of No.3 machine in the frequency range of 0～46.87 Hz was 24.32 percentage points higher than that of No.4 machine.The elevation effect was more obvious than the influence of explosion center distance.The high-frequency energy at the top relative to the bottom showed an elevation attenuation effect,and the low-frequency energy at the top relative to the bottom showed an elevation amplification effect.关键词
露天矿山边坡/爆破/频率切片小波/振动传播规律/振动能量/高程效应Key words
open-pit mine slope/blasting/frequency slice wavelet/vibration propagation law/energy of vibration/altitude effect分类
矿业与冶金引用本文复制引用
陈泓,贾皓琦,黄永辉,张智宇..基于FSWT算法的某露天矿山边坡爆破振动传播规律研究[J].矿产保护与利用,2024,44(4):29-40,12.基金项目
国家自然科学基金项目(52064025、52164009) （52064025、52164009）
云南省重大科技项目(202202AG050014) （202202AG050014）
