The Research On The Technique Of Rock AE Wave Analysis And Noise Recognition

Acoustic emission is a kind of physics phenomenon of bringing energy and generating instant wave in the course of solid material metamorphose or failure. AE is a dynamic examining way, examining statice construction in any place or encircle rock under force.Wavelet analysis development on the basis of Fourier analysis, as a way of time-frequency analysis, which breached limitation of tradition signal process method; pointing out a way of adaptable time and frequency field, both low frequency and high frequency, which automatic adjusting time-frequency window, meets analysis needs.Development and application AE technology are introduced, limiting AE technology development of main causes have also been pointed out. Collecting and clearing up AE waves in lab and location, analysis AE signal collected with wavelet analysis, relating regularity of distribution behavior of parameters temporal sequence and rock crack evolvement rock AE wave characteristics in no same course of transform fracture on stages are presented. Based on wavelet transform and spectral analysis, distilling AE noise spectral analysis characteristics, setting up noise database, according to abrupt signal and noise dissimilar regular on wavelet decompose scale figures, using soft and hard ware to decompose noise and signal efficiency, to process locative data convenient, which is reality significant for monitoring and prediction on rock crack regular and development orientation.