A method for optimal reservoir operation considering the drifting demand of fish eggs in reservoir area

Abstract

The present application relates to a kind of reservoir optimal scheduling method considering the fish egg drift demand of reservoir area.First, according to the time required for fish egg hatching and spawning ground location, the drift time required for fish egg in reservoir area and downstream of reservoir is determined;According to the minimum flow velocity required for fish egg floating and drift time, the position of fish egg drift channel in reservoir area is determined, and the minimum flow required for reservoir is determined;Then, the daily scheduling rules of reservoir are established, wherein, in fish spawning month, when the water level of reservoir is higher than or equal to the starting water level of fish egg drift channel, the flow of future 3 days will continue to increase, and the daily average inflow of future 3 days is greater than or equal to the starting flow of drift channel, fish egg drift channel in reservoir area is opened;Finally, the maximum annual fish egg quantity in reservoir area is taken as the target to complete the drift process, and the specified reservoir water supply guarantee rate is taken as the constraint to optimize the reservoir scheduling parameters.The method can effectively balance the fish egg drift demand and reservoir water supply demand, and has important significance for the protection and restoration of river ecosystem with reservoir.

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