Intuitive analysis method of ecological water demand monthly scale on the basis of water demand for sediment transport

A technology of ecological water demand and analysis method, which is applied in special data processing applications, instruments, electrical digital data processing, etc. Configuration and ecological environment protection and other issues, to achieve the effect of strong practical applicability, avoiding calculation and a large number of data requirements, and the calculation method is practical

Inactive Publication Date: 2016-07-27
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0005] The present invention designs an intuitive analysis method based on the monthly scale of ecological water demand based on sand transportation and water demand, which solves the problem of heavy calculation workload of ec

Method used

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  • Intuitive analysis method of ecological water demand monthly scale on the basis of water demand for sediment transport
  • Intuitive analysis method of ecological water demand monthly scale on the basis of water demand for sediment transport
  • Intuitive analysis method of ecological water demand monthly scale on the basis of water demand for sediment transport

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Embodiment approach

[0032] Firstly, the ecological target is determined, and the ecological water demand is determined by establishing the relationship between the parameters of the ecological target and the runoff. The invention divides the ecological target into two parts: the representative monthly ecological target and the time change target of water demand.

[0033] (1) Calculate the representative monthly ecological water demand.

[0034] The calculation method of sand transport water also has great differences due to the different understanding of the definition of sand transport water. In order to maintain the dynamic balance of scouring and silting in the river, a certain amount of ecological water is needed to solve the problem of sediment transport and discharge. This part of the water is called the amount of water for sediment transport. The sediment concentration of the same river is different in different periods and under different climatic conditions. There are many factors that ...

Embodiment

[0049] Embodiment: combine below figure 1 and figure 2 , the present invention is further described:

[0050] The specific implementation of the present invention is illustrated by taking the calculation of ecological water demand in different months of the year in the Yan'an section of the Yanhe River, a tributary of the Yellow River, as an example. Select Yan'an Station as a representative station, and the ratio of sediment content in each month of the year at Yan'an Station is shown in the attached figure 1 As shown, choose July as the representative month with the most prominent contradiction of sediment ecological water demand, and calculate the ecological water demand Q of sediment transport in July according to the formula (1) p 38 million m 3 . According to the total amount of natural runoff in different years and the natural runoff in each month of the year, the proportion of ecological water demand in each month to the total annual amount obtained according to f...

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Abstract

The invention relates to an intuitive analysis method of an ecological water demand monthly scale on the basis of a water demand for sediment transport. Requirements on environmental elements by water demand for sediment transport which has a most prominent contradiction on ecological and production water demand are used as a representative month ecological target, a representative month ecological water demand is determined, the yearly time change rate of average natural runoff volume of multiple years is adopted as a yearly time change target of the ecological water demand, finally, the month-by-month change difference of the ecological water demand is finally determined, and the month-by-month change difference requirement of the ecological water demand is intuitively analyzed. The intuitive analysis method avoids redundish calculation workload and data quantity demands, and effectively realizes a purpose of the intuitive analysis of the ecological water demand monthly scale difference.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for visually analyzing the monthly scale difference of ecological water demand. Background technique [0002] Quantitative control indicators will promote the smooth progress of my country's water resources management, such as soil and water conservation, flood control standards, water supply guarantee rate, etc., and related water ecological indicators also need to be continuously quantified so as to integrate water ecological management with other water resources. Management is integrated. In the water eco-environmental system, the related research on the ecological water demand marks that people began to pay more and more attention to the water ecological problems. Ecological environment water requirement can be popularly interpreted as the basic water quantity and water quality required to maintain water ecological balance. At present, there are hun...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 刘佳李传哲王锡曚史婉丽于福亮田济扬范玲雪
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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