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Abstract It was estimated that the normal water inflow was 2.37m3/min and the maximum water inflow was 3.55m3/min in No.2875 west working face of Qianjiaying mine. There were five low points on the transport road, which made natural drainage unable to achieve. Special waterproof and drainage design should be formulated in advance and implemented certainly. It had significant advantage in water damage prevention and control that comprehensive detection combining geophysical and drilling exploration and advanced drainage measures were utilized, associated with scientific and effective waterproof and drainage system. The combined application of drainage roadway、retention wall、dredging belt conveyer、sedimentation tank and comprehensive geophysical exploration technologies including audio frequency electric perspective and seam seismic, could effectively prevent water-contained sudden water accidents including collapse column and aquifer， achieve separation of water and coal， lighten dredging pressure of sedimentation tank in mining area， and realize safety mining of working face.
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