Abstract: At present, my country's water conservancy industry is developing rapidly, and a large number of water conservancy and hydropower projects have been built, which has further improved the fl ood control and water resources regulation and control capabilities. However, as time goes by, reservoir dams are often exposed to aging, erosion, and other risks. If measures are not taken in time to remove dangers and reinforcements, it is difficult to ensure the normal operation of the reservoir, and there may even be serious safety hazards. Based on this, this paper proposes curtain grouting technology, hoping to eff ectively improve the performance of the reservoir dam and achieve a good reinforcement effect.