THE RESEARCH AND PRACTICE OF PSEUDO-SPECTRAL METHOD IN THE PROCESSING UNDER THE CONDITIONS OF THE TUNNEL ADVANCED PREDICTIONS

According to the propagation characteristics of seismic wave in different media area,pseudo-spectral method is used to process and analyze the seismic wave record from the tunnel face.The results show that the migration profile of the reverse-time depth migration can be more accurately to identify the location of structural plane in front of tunnel face.It can provide the basis for adverse geological conditions in early prediction in front of tunnel face to ensure the reasonable and safe tunnel excavation.