| The hidden goaf poses a major challenge to the safety and efficiency of mining in the mining area. In this paper, taking the detection of the goaf in the study area as an example, the high-density electric method is selected as the main detection method, and three geophysical survey profiles are implemented, and a large number of electrodes are arranged on the surface to describe the underground electrical structure in detail, so as to infer the location and characteristics of the goaf. The results of this study showed that all inferred goaf areas exhibited high electrical resistivity anomalies and were speculated to be goaf areas without water accumulation. Through data inversion and interpretation, the positions, scales, and characteristics of 10 goaf areas were successfully inferred. Based on the existing ore body production forms, the projected area of the goaf plane was estimated to be 3817m2 and the total volume to be 22370m3. Based on the detection results, the danger of each goaf was evaluated, and it was specifically pointed out that there may be a risk of subsidence in some unfilled goafs without water accumulation. |