Abstract: With the deepening of the nationwide survey on hidden geological hazards in mines, selecting efficient and suitable geophysical exploration methods is crucial for the effective implementation of the survey. Tailings ponds, often constructed in gully valleys, commonly face challenges such as complex terrain （steep mountain slopes on both sides, weak and water-bearing floodplains, and slope-structured embankments）. Traditional geophysical exploration methods such as high-density electrical resistivity and ground transient electromagnetic methods play an important role in localized surveys but are generally limited by low efficiency, poor terrain adaptability, and high safety risks, making it difficult to achieve efficient and comprehensive coverage of large-scale, complex topographic tailings ponds. This paper takes the case of a hidden hazard factor survey at a tailings pond in Luoyang as an example, systematically introducing the application of the semi-airborne transient electromagnetic method （SATEM） in such complex scenarios, providing technical references and practical insights for similar mine hidden hazard factor surveys.