Comprehensive Recognition Technology of Collapsed Column in Coalfield

To reasonably detect and explain the space information of collapse column and solve the problem of precision and accuracy of comprehensive detection and interpretation technology of collapsed column. Based on the developmental characteristics of collapse column in coal mines, we detected by surface and underground integrated identification technology. We determine the scope of collapsed column by ²¹⁰Po detection, 3D seismic exploration and transient electromagnetic detection technology on the ground. At the same time, using electrical method detection of three-point source and the wireless audio perspective detection technology, those comprehensive detection means can accurately determine the location and influence scope information of the collapsed column.