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Ecological dispatching method of river channel type water reservoir suitable for home fish breeding

A scheduling method and river channel technology, applied in fish farming, river regulation, application, etc., can solve the problems of lack of quantitative analysis, in-depth research on river ecological flow, etc., and achieve the effect of reducing impact and coordinating interest relations

Active Publication Date: 2012-07-25
CHINA THREE GORGES CORPORATION
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Problems solved by technology

[0004] Patent Application No. 201010127116.3 discloses a reservoir optimization scheduling method for river ecological flow maintenance; Patent Application No. 201010271492.X discloses a reservoir ecological scheduling method based on an ecological scheduling map; but these disclosed technologies are based on biological aspects of rivers The study of ecological flow is not yet in-depth. Although there is a certain qualitative understanding of the pulse process of ecological flow, the process of water level fluctuations closely related to biological reproduction and growth, and the time characteristics of ecological flow in response to biological life cycles, there is still a lack of quantitative knowledge. Analysis

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  • Ecological dispatching method of river channel type water reservoir suitable for home fish breeding
  • Ecological dispatching method of river channel type water reservoir suitable for home fish breeding
  • Ecological dispatching method of river channel type water reservoir suitable for home fish breeding

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Embodiment 1

[0028] This embodiment proposes an ecological regulation method for river-type reservoirs suitable for the breeding needs of domestic fish. The schematic diagram of the ecological regulation of the reservoir is as follows figure 2 As shown, the specific steps are:

[0029] (1) During the early spawning period of the four major Chinese carps in April, reduce the discharge flow of the dam within 2-3 days and raise the design water level of the reservoir, but not exceed the upper limit water level. For example, the average daily discharge flow will drop from 10,000 cubic meters per second to 8,000 cubic meters per second , to provide flow space for continuously increasing the discharge flow in the future and ensuring the daily increase;

[0030] (2) Increase the discharge flow of the Three Gorges Dam, continue to discharge water for 5-7 days, and increase the daily average daily outflow flow by about 1000-3000 cubic meters per second, for example, increase the daily average disc...

Embodiment 2

[0034] This embodiment proposes an ecological regulation method for river-type reservoirs suitable for the breeding needs of domestic fish. The schematic diagram of the ecological regulation of the reservoir is as follows image 3 As shown, the specific steps are:

[0035] (1) At the beginning of the spawning of the four major domestic fishes in April, continue to reduce the discharge flow of the dam for 15-20 days. For example, the average daily discharge flow drops from 5,000 cubic meters per second to 4,000 cubic meters per second, and the design water level of the reservoir is raised, but not exceeding the upper limit. In order to continuously increase the discharge flow in the future and ensure the daily increase, it provides flow space. In order to suppress the occurrence of algal blooms in spring, a peak-shaving discharge is adopted during the period to increase water level fluctuations and improve the hydrodynamic conditions of the reservoir area;

[0036] (2) Increase...

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Abstract

The invention relates to a water reservoir ecological dispatching method, in particular relates to an ecological dispatching method of a river channel type water reservoir suitable for home fish breeding. The ecological operation for a water reservoir which is suitable for home fish spawning is implemented at the home fish egg reproduction period based on a corresponding-period water reservoir regular dispatching process to make an 'artificial flood peak' process, so as to creat hydrologic conditions which are suitable for home fish breeding at the downstream. Through continuously reducing the leakage amount of a dam, a space for continuously leaking water is provided in the later stage and the daily amplification flow rate of the downstream is guaranteed, so that a good ecological environment is provided for the home fish breeding. The dispatching method disclosed by the invention meets the benefits of the conventional flood control, power generation, navigation and the like of a river channel type water reservoir, and also considers the ecological benefits of the downstream of the river channel type water reservoir, so that the benefit relation between water-power engineering and ecological protection of the reservoir is effectively coordinated; and the dispatching method has the advantages of strong operability and practical applicability.

Description

technical field [0001] The invention relates to a method for ecological regulation of a reservoir, in particular to a method for ecological regulation of a river-type reservoir suitable for the breeding needs of domestic fish. Background technique [0002] The so-called "ecological regulation" refers to the comprehensive reservoir regulation method that takes ecology into consideration. Griphin mentioned in the literature that ecological regulation means that the reservoir should not only meet the needs of human beings for water resources but also meet the water requirements of the ecosystem as much as possible. Wang Shucheng believes that ecological regulation means that the reservoir exerts various economic and social benefits while exerting optimal ecological benefits. It is aimed at ecological problems in macroscopic water resource allocation and regulation. The ecological dispatch of water conservancy and hydropower projects is an extremely important and effective meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/02A01K63/00
Inventor 戴会超郑铁刚蒋定国王煜蔡庆华李智
Owner CHINA THREE GORGES CORPORATION
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