In order to solve the problem of insufficient water and gangue transportation capacity of the mining company of Donghuantuo Mine, Kailuan Group, with the mine -950 level extension depth project as the background, the analysis of the depth project in the mine surge water and the required gangue discharge, the drainage capacity of the temporary drainage system and gangue unloading system of the discharge capacity were set, the temporary drainage system was given, a kind of transforming the preliminary temporary drainage system into the mid-term gangue unloading system was proposed, which could be transformed into the air compressor and battery locomotive room at a later stage, with technical characteristics, application method and effect of the scheme.