The comprehensive evaluation of the results of radio wave perspective;

The radio-wave penetration method can detect the relative locations of abnormal structures such as collapse columns,faults and thin coal layer areas,and the mine transient electromagnetic method can estimate the water-containing situation of these structures based on the variation of the resistivity in the detection range.

Radio-wave penetration method is mainly applied to detect the abnormity structures(collapse column, fault and thin coal layer area etc),and this paper puts emphases on introducing the use of the radio-wave penetration method in exploring the crytic hydrated structure in coal layer.

This paper discusses on the principles of the underground radio wave penetration method in detecting the silo collapsing columns, and connecting with the actual examples, illustrates the application of the underground radio wave penetration method in detecting the silo collapsing columns.

Aiming at the problem that the actually measured data for radio wave tunnels perspective method are not full and the inverse equation groups are undetermined, the image of geologic abnormal body was reconstructed by using tomography method.