基于二次型变换的深井爆破振动信号时频特征分析

Analysis the Time-frequency Characteristic of the Deep Well Blasting Vibration Signals based on Quadratic Type Transformation

对处理爆破振动信号常用的2种线性二次型分布进行比较,选择平滑伪Wigner-Ville分布作为爆破振动信号分析的二次型时频变换。基于平滑伪Wigner-Ville分布对深井爆破振动信号的主频、振幅、持续时间特征与地表爆破振动信号进行对比分析,得出深井爆破振动信号时频特征,用以分析、控制深井爆破振动产生的危害。

This article compared two commonly used linear quadratic distribution in processing blasting vibration signals and selected smooth pseudo-Wigner-Ville distribution as blasting vibration signal analysis of quadratic time- frequency transformation. Based on smooth pseudo-Wigner-Ville distribution, deep well blasting vibration frequency signal, amplitude ,duration and characteristics of the surface blasting vibration signals were analyzed, and coneluted deep well blasting vibration time-frequency signal characteristics ,which is used to analysis and control the damage of blasting vibration.