Seismic wave field simulation of containing-hole media with dynamic photoelastic method

The actual underground medium is very complex. There are inevitable errors in the numerical forward modeling results by employing computer software, and it is difficult to simulate the complex underground medium. The dynamic photoelasticity method can obtain the propagation characteristics of wave fields at the seismic scale in the laboratory, and can observe the wave field characteristics in real time. The wave field characteristics in solid media are obtained by dynamic photoelastic physical simulation device experiment, and the propagation law of ultrasonic pulse waves in media is observed. By carrying out the sample model pixel calibration of the instantaneous wave field image and longitudinal pixel sampling of the wave field image, the simulated single shot seismic record in solid media can be obtained. Comparison of the simulated single shot seismic records of the non-hole medium model and containing-hole medium model shows that there are obvious differences in waveform characteristics between the two models. By comparing the simulated single shot seismic record with the actual field single shot seismic record, it is found that the two have sound correspondence, which shows that the laboratory high-frequency small-scale and field low-frequency large-scale can also reflect the same internal physical essence without meeting the fixed ratio observation theory.