Barrage structure capable of lowering silt of reservoir area

The utility model discloses a barrage structure capable of lowering silt of a reservoir area. The barrage structure comprises a barrage spillover dam section arranged inside a main river channel. A spillover dam is of a gravity type structure. The dam back portion of the spillover dam is connected with an energy dissipation facility. A rubber dam is arranged on a weir crest of the spillover dam. The rubber dam is anchored on the weir crest of the spillover dam. Pipelines which are used for filling and draining water to the rubber dam are arranged in a concrete structure on the weir crest of the spillover dam. The barrage structure capable of lowering the silt of the reservoir area has the advantages that the structure that the rubber dam is arranged on the weir crest of the barrage spillover dam is used, compared with a traditional gate dam type desilting and aerial drainage building, a gate and start and stop equipment are removed, and the whole building is simple in structural style. The gravity type structure is used in the spillover dam, rebar usage amount is low, and construction speed is fast. The rubber dam is controlled through filling and draining water by a water pump, and the manufacturing cost of a dam bag and an operation control system of the rubber dam is low. According to the barrage structure, water resources are fully used, construction investment is greatly saved, and the exploitation benefits of a power station are improved.