Main stream reservoir ecological operation method considering incoming water from interval tributary

Abstract

The invention provides a main stream reservoir ecological operation method considering incoming water from an interval tributary. The eco-hydrological demand for target fish spawning at a downstream main stream spawning site is defined through investigation and research, and high flow pulse meeting analysis related to fish spawning at the main stream and tributary is performed; high flow pulse characteristic indexes of the main stream and tributary over the years are sorted and accounted in the fish spawning period; a main stream reservoir is identified to cooperate the tributary for developing the key indexes of ecological scheduling start-up conditions; important parameters of channel routing are defined according to diachronic hydrological data, and a reservoir ecological operation model is established; and the reservoir ecological operation method considering the incoming water from the interval tributary is achieved. According to the ecological operation method, by considering theincoming water from the interval tributary, the problem of insufficient frequency in the high flow pulse process of a downstream river due to normal operation can be solved, and the high flow pulse process of the downstream river can be improved effectively; and the required hydrological conditions for mass propagation of drifting breeding fish at the spawning site are met.

Description

technical field [0001] The invention relates to the technical fields of water resource management and water ecology, in particular to an ecological scheduling method for a main stream reservoir considering incoming water from an interval tributary. Background technique [0002] The spawning of drifting egg-producing fish is closely related to the high-flow pulse process in the river, and most of the spawning occurs during the high-flow pulse swell process. With the completion and operation of large-scale reservoirs on rivers, the reservoirs have undertaken comprehensive utilization tasks such as flood control and power grid peak regulation, which has changed the natural hydrological runoff law of the downstream river, and the original high-flow pulse duration, frequency, peak value and other parameters of the river channel have changed significantly. The large change will have a great impact on the spawning of drifting egg-producing fishes in the downstream reaches. At the ...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the conventional reservoir dispatching method cannot realize the high-frequency and high-flow pulse process generated by the downstream river. Based on the law of natural high-flow pulse encounters in the main and tributary rivers for many years, a mainstream reservoir ecology that considers the interval swelling is determined. Scheduling method, by optimizing the main stream reservoir scheduling method to maximize the high-flow pulse process of the downstream spawning grounds, improve the hydrological conditions required for the mass reproduction of drifting egg-producing fish, and promote the natural reproduction of drifting spawning fish

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