The seepage status of Dazhan reservoir west auxiliary dam foundation has been analyzed, and the dam body and dam foundation have been simulated, then the seepage law of dam body has been researched. The seepage characteristics for the reinforced dam body or not has been analyzed and compared. The concrete measures of anti-seepage reinforcement for the west auxiliary dam were put forward, the calculated parameters of the consolidation and seepage control have been optimized, and some useful conclusions have ...