Abstract: In view of the hidden dangers of water accumulation in the roof limestone aquifer and floor goaf of the 15104 working face in Longhua Coal Industry, a comprehensive geophysical exploration is carried out by adopting the combination of Radio Wave Pit Penetration Method (RCT) and Transient Electromagnetic Method (TEM). Based on the "dual-field coupling" mapping model, precise positioning of water richness in complex structural areas is achieved. Through the linkage criteria of "high attenuation-low resistance" and "high attenuation-high resistance", after eliminating the interference of metal brackets, 8 abnormal water bearing areas are successfully delineated. According to the drilling verification, it is indicated that the water inflow of a single hole is 0-8 m³/h, of which ≥ 2 m³/h are determined as the water bearing areas, with an anastomosis rate of 96% and a Kappa consistency coefficient of 0.83. The research shows that the K₂ limestone fissure aquifer and fault fragmentation zone are the main factors of water control, while the X₁ collapse column has no water conducting risk, providing a basis for safe mining.