Abstract: An iron mine is a typical skarn deposit formed by magmatic rock erosion. The formation fractures form a water-rich area with a large amount of water，which seriously threatens the safe production of the mining area.In view of the problems of large water volume，wide range，large threat，difficult detection and complicated water exploration and drainage in the water-rich area of the mine， a set of integrated exploration and water-discharge technology suitable for water drainage in metal mine water-rich areas is proposed.The equivalent parameter method is applied to high-power transient electromagnetic detection to distinguish between metal and water that are difficult to distinguish by conventional transient electromagnetic methods.According to the detection results of high-power transient electromagnetic method，and through the mutual verification and supplement of the geological data and actual drilling data，so as to determine the spatial position and size of the water-rich area in the mining area， and then carry out the design of exploration and release water to determine the exploration and release water scheme.Before releasing water， in order to find out the hydraulic connection between different water accumulation areas， optimize the exploration and drainage water design plan， improve the controllability of the exploration and release water treatment， and ensure the safe production of the production area of the mining area，the connectivity test is carried out in different water accumulation areas，and the areas with potential safety hazards are treated in time to ensure the smooth progress of the water.It guarantees the safe production of mines and provides beneficial reference for the integrated exploration and release of water in similar metal mines.

Key words: metal mine, exploration and water-discharge, transient electromagnetic method, water-rich area