Device for relieving impact effect of surge on dam

The invention relates to the technical field of water conservancy and hydropower engineering, and provides a device for relieving the impact effect of surges on a dam, which comprises the dam, a plurality of buoyancy tank assemblies are arranged at the bottom end of the slope of the dam, the buoyancy tank assemblies are equidistantly distributed along the length direction of the dam, and the buoyancy tank assemblies are connected in series through steel ropes; the bottom ends of the two banks of the dam are each provided with a guide assembly used for guiding the steel rope, one end of the dam is fixedly connected with a fixing plate used for fixing the steel rope, and the other end of the dam is provided with a winding assembly used for winding the steel rope. The main buoyancy tank, the auxiliary buoyancy tank and the wing plates connected to the lower portions of the auxiliary buoyancy tank block propagation of waves or enable the waves to be broken through the upper floating body structure, the waves are