矿业科学学报2025，Vol.10Issue(4)：618-628,11.DOI:10.19606/j.cnki.jmst.2025026
高压气体破岩振动信号混沌分形特征研究
Study on chaotic fractal characteristics of high-pressure gas rock-breaking vibration signal
摘要
Abstract
To investigate the nonlinear chaotic fractal characteristics of high-pressure gas rock-breaking vibration signals,a new rock-breaking gas generator was developed and gas rock breaking experiments were conducted in a stable limestone open-pit mine.High-speed photography was used to capture the rock breaking process and monitor the vibration effects.The nonlinear characteristics of the collected rock-breaking vibration signals were finely extracted.The results show that,compared with emulsion explosive blasting,high-pressure gas rock breaking has high-frequency and low-amplitude characteris-tics,with smaller fractal box dimension values and more limited frequency domain distributions.The o-pening width of the multifractal spectrum is narrower and the singularity of energy distribution is smal-ler;As the frequency decreases,the dominant mode component chaotic attractor contained in the gas rock-breaking signal exhibits an elliptical trajectory in the two-dimensional phase plane with a gradually decreasing ratio of the long axis to the short axis,ultimately converging near the stable point at the cen-ter of the ellipse,exhibiting typical chaotic dynamic characteristics.The research results provide ex-ploratory ideas for safe and efficient mining and disaster assessment of mineral rocks under dual carbon targets.关键词
破岩气体发生器/破岩振动/分形特征/混沌吸引子/时频分析Key words
rock-breaking gas generator/rock-breaking vibration/fractal characteristics/chaotic at-tractor/time-frequency analysis分类
矿业与冶金引用本文复制引用
付晓强,俞缙,戴良玉,彭仪欣,邵艺强..高压气体破岩振动信号混沌分形特征研究[J].矿业科学学报,2025,10(4):618-628,11.基金项目
福建省自然科学基金面上项目(2024J01905) （2024J01905）
