Water retaining device for hydraulic engineering construction

The utility model discloses a water retaining device for hydraulic engineering construction, which relates to the technical field of hydraulic engineering and comprises a support column and a transmission component fixedly mounted at the upper end of the support column, a filter component comprises a filter shell and a water leakage port formed in the surface of the filter shell, and a connecting rod is arranged on the inner side of the filter shell. One end of each connecting rod is fixedly connected with a filtering cavity, when the gate discharges water, water flows through the filtering plates and the filtering shell, when garbage exists, the garbage flows along the water filtering cavities, and when the garbage flows along the water, the garbage has impact force of water and then extrudes the filtering openings to penetrate through the filtering cavities, and the garbage enters a cavity formed by the two filtering cavities and the connecting rods; as the filter opening is made of the elastic net-shaped m