In this paper, taking No.12914 fully mechanized mining face in the east well of Gequan Mine as an example, the transient electromagnetic advanced detection method was used to detect the possible floor fracture development concentration area and hidden water bearing abnormal area in the goaf. At the same time, the three dimensional mapping method was used to analyze the geophysical abnormity, and the drilling method was used to confirm the potential water outburst channel and other safety hazards of the geophysical abnormity in the working face. It was proved that the interpretation method of multi-group advanced three dimensional mapping was reliable and effective in explaining goaf and floor abnormities under limited conditions.