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Management method of river ecological flows based on reservoir operation

An ecological flow and reservoir technology, applied in the field of environmental protection and comprehensive utilization of resources, can solve problems such as difficulty in realizing the protection of river ecosystems

Inactive Publication Date: 2011-06-29
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

Therefore, although the existing river ecological flow regulation method based on reservoir regulation can meet the requirements of different water supply guarantee ratios, it is difficult to achieve the maximum protection of river ecosystems.

Method used

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  • Management method of river ecological flows based on reservoir operation
  • Management method of river ecological flows based on reservoir operation
  • Management method of river ecological flows based on reservoir operation

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Effect test

Embodiment Construction

[0068] The present invention will be further described below by taking a certain reservoir in the northern basin of China as an example.

[0069] 1 Interval division of reservoir inflow flow

[0070] takes parameters I 1 , I 2 and I 3 Inflow to the reservoir ( R ) is divided into four zones: R ≥ I 1 , I 1 > R ≥ I 2 , I 2 > R > I 3 , R ≤ I 3 . The planned water supply and water supply guarantee rate of the reservoir are respectively set to 5.8 m 3 / s and 75%. Using multi-year daily runoff data, it is concluded that the flat beach discharge is 42.38 m 3 / s, thus, I 1 48.18 m 3 / s; the 75th percentile of the multi-year daily runoff of the reservoir section I 2 6.43m 3 / s; using the Tennant method to determine the minimum ecological water demand for each month is I 3 (Table 2).

[0071] 2 Establishment of basic, compromise, ideal and coupled schemes for river ecological flow management

[0072] The basic, compromise, ideal and coupling schemes of...

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Abstract

The invention provides a management method of ecological flows river based on reservoir operation. The management method comprises the following steps: firstly, establishing a basic scheme, a compromise propose and an ideal scheme on the ecological flows management to be respectively suitable for the demands of high, medium and low water supply guarantee rate, and maintain health state of the basic, good and ideal ecological system of the river, simultaneously, dividing the capacity space of the reservoir to correspond to the management scheme of the ecological flows from top to down in sequence; then adopting a reservoir operation curve to guide so as to supply the water for the people and forming an integral reservoir ecological operation scheme by combining with the management scheme of the ecological flows; and finally applying a genetic algorithm, taking the water supply guarantee rate meeting the plan as the basic constrains and taking disturbance which reduces hydrologic regimeof the river as an optimal target to optimize parameters of the reservoir capacity partition, dispatch curves and the like, so that the management scheme of ecological flows of the river based on thereservoir operation is obtained. The method can be suitable for demands of the different water supply guarantee rates, provide the optimized ecological flows process and effectively protect the ecological system of the river.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and resource comprehensive utilization, and relates to a river ecological flow regulation method based on reservoir regulation. Background technique [0002] Effective regulation of river ecological flow is a basic task of reservoir regulation and a basic requirement for river ecosystem protection. Providing the ecological flow required by rivers is crucial to maintaining the health of river ecosystems. However, with the increase of socio-economic water use in my country, the shortage of socio-economic water is becoming more and more serious. The regulation of river ecological flow needs to take into account both human and ecological needs. There are two important criteria for judging the advancement of a river ecological flow regulation method based on reservoir regulation: 1) it can be suitable for different human water supply guarantee rates, and 2) it can provide the ecologica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B1/00
Inventor 杨志峰尹心安杨薇
Owner BEIJING NORMAL UNIVERSITY
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