露天采矿技术2025，Vol.40Issue(6)：13-19,7.DOI:10.13235/j.cnki.ltcm.20250210
露天矿岩气-爆联合开挖振动效应与能量分布特征分析
Analysis of vibration effects and energy distribution characteristics of rock gas explosion combined excavation in open-pit mines
摘要
Abstract
To address the harmful effects and defects in traditional blasting methods for open-pit mining,the article presents gas-explosive combined blasting technology,monitors and analyzes the effect of blasting vibrations and characteristic of energy distribution.The results indicate that the vibration frequency of gas-explosion combined detonation is mainly in the mid low frequency range,and the vibration frequency shows the characteristics of fast high-frequency attenuation and relatively stable low-frequency during propagation.The duration of gas rock breaking energy is about one-third of that of explosive blasting,and the energy attenuation is stronger compared to explosive blasting.The combined detonation technology can save 3%to 11%of explosives,increase shoveling efficiency by 5.3%,reduce crushing energy consumption by 4.5%,and improve overall efficiency by an average of 5%,resulting in significant economic benefits.When conditions permit,the detonation method of"first rupture,then explosion"should be adopted as much as possible to reduce secondary disasters caused by blasting and achieve green,safe,and efficient construction.关键词
气-爆联合爆破技术/新型破岩气体发生器/振动效应/能量分布/Hilbert谱Key words
gas-explosive combined blasting technology/new rock breaking gas generator/vibration effect/energy distribution/Hilbert spectrum分类
矿业与冶金引用本文复制引用
徐芳丽,付晓强,戴良玉,闫大洋,苏洪..露天矿岩气-爆联合开挖振动效应与能量分布特征分析[J].露天采矿技术,2025,40(6):13-19,7.基金项目
福建省省级大学生创新训练资助项目(S202511311019) （S202511311019）
国家级大学生创新训练资助项目(202511311015) （202511311015）
福建省自然科学基金联合资助项目(2024J01905) （2024J01905）
