Study On The Application Of General S Transform And Gabor Deconvolution In Signal Processing Of Tunnel Geological Prediction

In the process of excavation,the geological information in front of the palm of the tunnel plays an important role in the construction of the tunnel.Especially in the complicated area of hydrological and geological conditions,tunnel construction,such as cave,fault and broken zone Body,if you can grasp the construction of the front of the geological surface in front of the distribution of geological defects,to take appropriate measures,it is possible to avoid mud,gushing,landslides and other accidents.Therefore,it is very important to carry out tunnel geological overtreatment during tunnel construction.In this paper,we mainly study the signal processing technology based on elastic wave method in tunnel geological prediction technology.The main contents are as follows:(1)In this paper,the basic principles and numerical algorithms of Fourier transform,discrete convolution and discrete correlation are deduced in detail.(2)In this paper,the relationship between S transform and wavelet transform and short time Fourier transform is analyzed in detail.At the same time,the numerical algorithm of S transform and generalized S transform is described in detail.By comparing the generalized S-transform,the short-time Fourier transform and the wavelet transform spectrum,it is shown that the generalized S-transform has high time-frequency resolution and is more suitable for the data processing of seismic data.(3)In this paper,the basic theory and numerical algorithm of least squares deconvolution and Gabor deconvolution are deduced in detail,and the relationship between Gabor deconvolution and square deconvolution is illustrated.(4)In this paper,the Gabor deconvolution is used to compress the F-K filtered data to improve the longitudinal resolution of the signal,and the effectiveness of the method is illustrated by engineering examples.