Design Of Data Processing Software About Detection Of Tunnel Water Gushing By MRS

Tunnel engineering quantity increase causes accidents of tunnel water gushingquantity increase, which not only affects the construction schedule, also causes greatloss of property, even results in casualties. Magnetic Resonance Soundi ng technologyinstrument can detect the water in every detection of the tunnel. Collecting data havethe signal denoised by the data processing software about detection of tunnel watergushing by MRS, then the water’s correct location and content size can be obtainedthrough inversion, the results can guide the construction project, and avoid theaccidents of the waterThe principle of Magnetic Resonance Sounding detection method is generated anexcitation field by electricity coil to excitation hydrogen protons of undergroundwater to higher energy level, when removed the excitation field, hydrogen proton getback to lower energy level by release of electromagnetic wave, the MRS signal is theelectromagnetic waves released by hydrogen proton which is received by receivingcoil. According the signal processing, we can get the Hydrogeological condition byinverse interpretation.This paper is based on the national special equipment-disaster water (themine/tunnel) magnetic resonance sounding detection instruments and equipmentdevelopment and application, coordinating the MRS detection equipment, designedthe data processing software about detection of tunnel water gushing by MRS on theground MRS software.This paper studies two new denoising methods in the data processing softwareabout detection of tunnel water gushing by MRS on the ground MRS software,includes the parameter separately setting adaptive notch and the least-square movingaverage; builds the model simulation; uses the detecting data denoising to prove theefficiency of the two new methods.The software mainly designed four functions, including the forward modeling, the kernel function calculation, data de-noising and inverse interpretation mapping.The first function contains the assumption water layer modeling, the kernel functionimporting and the results display, in order to guide the construction project; Thesecond function mainly aims at the tunnel situation, which the transmitting andreceiving coins separated, include the parameter setting, the results display and theoutput files saving; The third function include the superposition and digital filtering,which obtain the threshold superposition, weighted superposition and statistical stack,triangular weight moving average, least-square moving average, adaptive notch, lowpass filter and wavelet denoising，combined using of several denoising methods forsuppressing noise of the field experimental data have obvious effect, improves thesignal-to-noise ratio of data, enhances the reliability of the inversion interpretation;The fourth function includes the data importing, the kernel function importing and thedisplay results, which obtains the signal curve, the water content histogram, the andinitial amplitude and excitation pulse curve, the frequency and excitation pulse curve,the initial phase and excitation pulse curve and the relaxation time and excitationpulse curve, relatively rich inversion interpretation results are given. And then thispaper completes the software interface design of the corresponding modules, throughprocessing the detecting data, proves the software’s reliability and applicability.