Culvert pipe water inlet structure under small earth and rockfill dam

The utility model relates to the technical field of dam construction. The utility model discloses a culvert pipe water inlet structure under a small earth and rockfill dam. The device comprises an original cut stone revetment, a stilling well is arranged on the lower portion of the left side of the original cut stone revetment, an opening and closing room is arranged on the upper portion of the right side of the original cut stone revetment, a winch is arranged in the opening and closing room, and a steel wire rope is wound around the output end of the winch; the device can be used at the water inlet of the culvert pipe; a concrete precast slab is arranged as a bottom template and a template support for pouring a cover plate; the formwork does not need to be dismantled after pouring is completed, the installation difficulty of the device is reduced, the water stop ring and the water stop copper sheet are installed at the joint of the stilling well and the culvert pipe, and therefore itis guaranteed that the j