Protective device for hydraulic engineering construction

The utility model discloses a protection device for hydraulic engineering construction, which comprises a water channel, a movable rotating shaft is fixedly arranged on the inner wall of the water channel, the movable rotating shaft is connected with a mounting bracket, a traction steel cable is arranged at the tail end of the mounting bracket, and a positioning mechanism is fixedly arranged at the tail end of the traction steel cable. A protective net is installed between the canal and the installation support, a first through hole is formed in the edge of one end of the surface of the installation support, a first sliding block is installed above the first through hole, and a first screw is installed above the first sliding block in a threaded mode; a second through hole is formed in the position, located on one side of the first through hole, of the surface of the installation support, a second sliding block is installed above the second through hole, and a second screw is installed above the second slidin