Detection method for composite anti-seepage body of rockfill dam based on ground penetrating radar technology
Currently,the detection of composite anti-seepage bodies for rockfill dams mainly relies on elastic wave CT technology,but this method has the problem of inaccurate calculation of response energy values,resulting in low detection accuracy.Therefore,a detection method for composite anti-seepage body of rockfill dams based on ground penetrating radar technology is proposed.Based on the engineering geological conditions and the construction plan of the anti-seepage body,ground penetrating radar technology is used to collect the basic parameters of the anti-seepage body by analyzing and preprocessing the high-frequency electromagnetic wave signals received.Combined with finite element analysis software,a numerical calculation model of the anti-seepage body is established with a typical section of the rockfill dam as the research object.Based on this,a method combining waveform amplitude and waveform kurtosis is used to calculate the defect response energy value at the defect location,And use a drag type detector to detect defects in the anti-seepage body.The comparative experimental results indicate that applying the proposed method to the detection of composite anti-seepage bodies in rockfill dams can obtain more accurate detection results.
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