Abstract: According to the specific engineering geological condition of tailings reservoir, simulation calculation of seepage numerical were done on tailings reservoir by seepage analysis software.Considering seepage water of tailings reservoir does flow movement of low Reynolds number during flowing in tailings deposit body, seepage numerical calculation of different dam heights under normal and flood running condition were simulated based on linear Darcy law.The results show that velocity vector is much big at gulch position, quicksand carrying could intensify local hazards; total head was biggest around waterside and the possibility of saturation line overflowed at top of dam was biggest during the infiltrating process of reservoir water level to downstream tailings accumulative dam, and seepage destruction was mostly liable to happen.

Key words: Tailings reservoir, Seepage calculation, Numerical simulation, Saturation line