Reservoir capacity system for regenerating deposition capacity of small and medium-sized reservoirs

The utility model provides a reservoir capacity system for carrying out silting reservoir capacity regeneration on small and medium-sized reservoirs. The reservoir capacity system comprises a reservoir main dam, an auxiliary dam arranged at the tail of the small and medium-sized reservoirs and a sand flushing groove arranged in a reservoir area and located between the reservoir main dam and the auxiliary dam. The integral structural design is reasonable, the secondary dam is established, and the sand flushing groove is established between the secondary dam and the main dam, so that a structural system for regenerating the siltation storage capacity is realized; when the water inflow of a main river channel is small and the flow rate and the flow velocity required by silt flushing cannot be reached, the sluice can be used for blocking and storing water, and after enough water is stored, the sluice is opened to discharge water for silt flushing; when the water level of the reservoir is low, the sand basin sand