cm 0cm 0pt" class=MsoNormal>Based on a case study of typical cone-shaped columns in the Lu’an mine of ce prefix = ns0 ns = "urn:schemas-microsoft-com:office:smarttags" />ce>ceName>ce prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />ce w:st="on">ceName w:st="on">ShanxiceName>ceName>ce> ceType>ceType w:st="on">ProvinceceType>ceType>ce>, the authors established a mathematical model for the collapse column, and used the wave equation model for seismic ray tracing and wave-field simulation of collapse columns. The results show that, due to the special nature of the collapse columns, such waves as the normal reflected wave, the fault-point diffraction wave, the delay diffraction wave, the delay reflected wave and the “diffraction wave” consisting of P-wave field are formed around the collapse columns.