Based on the analysis on hydro-geological conditions in Zhongguan iron mine,a closed grouting curtain project was designed for water control in the mine.The construction quantity and water plugging effect of the western curtain grouting engineering was checked up and evaluated by means of additive effect analysis,discreteness analysis,cross-well high-density resistivity technology and examination holes.The results showed that the designed parameters of curtain grouting are reasonable,the grouting curtain has good anti-permeability and can meet requirements of mine water control and safety mining.