The Multi-Parameter Ultrasonic Identification of Rock Mass Quality Evaluation Method Based on Wavelet Theory

Based on the classical identification method with ultrasonic velocity,wavelet transformation and spectrum analysis are applied to analyze ultrasonic testing signals and then dynamical parameters in different frequency band are put forward.Using cluster analysis,correlative analysis and stepwise regressive analysis,a method of multi-parameter ultrasonic identification for rock mass is suggested based on wavelet theory.Using comparative analysis,the reliability and accuracy of the new evaluation method are improved.