自由面数量对爆破振动信号衰减及能量分布规律的影响研究  

作　　者：侯奎奎 

机构地区：[1]山东黄金集团有限公司深井开采实验室,山东莱州261400 [2]山东省深海深地金属矿智能开采重点实验室,济南250000

出　　处：《科技创新与应用》2025年第10期75-78,共4页Technology Innovation and Application

基　　金：山东省自然科学基金项目(ZR2021ZD36)。

摘　　要：爆破振动控制是爆破设计过程中的关键问题,能够有效降低对周围建构筑物稳定性影响。采用萨道夫斯基公式及小波包分析对内蒙古某深部金属矿巷道掘进爆破振动监测,分析不同自由面条件下的爆破振动衰减及能量分布规律。研究表明,不同段别巷道微差爆破信号依据其自由面变化,爆破振动峰值衰减规律存在显著差别,且只有一个自由面时与具有多个自由面条件下差别显著;不同方向上爆破振动能量在频率上的分布大致相同,逐渐由高频向低频过渡,且频带宽度逐渐变窄。Blast vibration control is a key issue in the blasting design process and can effectively reduce the impact on the stability of surrounding buildings and structures.Sadowski's formula and wavelet packet analysis were used to monitor blasting vibration in tunnel driving in a deep metal mine in Inner Mongolia,and the blasting vibration attenuation and energy distribution laws under different free surface conditions were analyzed.The research shows that there are significant differences in the peak attenuation laws of blasting vibration in different sections of roadway according to the change of its free surface,and the difference is significant when there is only one free surface and when there is multiple free surfaces;the distribution of blasting vibration energy in different directions is roughly the same,gradually transitioning from high frequency to low frequency,and the frequency band width gradually narrows.

关 键 词：自由面 能量 频率 小波包 爆破振动控制 

分 类 号：TD235[矿业工程—矿井建设]