Riverway ecological runoff process evaluation method based on matter element analysis

A technology of evaluation method and analysis method, which is applied in the direction of general water supply conservation, complex mathematical operations, resources, etc., can solve the problems of large subjective factors and no clear evaluation method, and achieve the effect of strong practicability and applicability

Inactive Publication Date: 2017-11-24
HOHAI UNIV
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Problems solved by technology

[0004] Many research results have been obtained on the calculation method of river ecological runoff process, but the calculation method of ecological runoff applicable to different river...

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  • Riverway ecological runoff process evaluation method based on matter element analysis
  • Riverway ecological runoff process evaluation method based on matter element analysis
  • Riverway ecological runoff process evaluation method based on matter element analysis

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Embodiment Construction

[0033] The specific implementation of the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] The Liujiaping River in Hunan Province is a primary tributary of the Qinshui Erdu River. It originates in the Liangfengjie of Longhui County, Hunan Province. The whole basin has a mild climate and four distinct seasons, covering an area of ​​72km 2 , the river is 30km long, the slope is relatively large, and there are no rare aquatic organisms in the river. Liujiaping Reservoir is located in Longzhuangwan Township, Xupu County. It is located at 110°36′~110°42′ east longitude and 27°26′~27°38′ north latitude. The controlled rainwater collection area is 53.63km 2 , the annual average flow is 1.51m 3 / s, the length of the main stream above the dam site is 21km, and the total storage capacity is 33.652 million m 3 , with multi-year regulation performance. The powerhouse of the power station is located 3...

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Abstract

The invention provides a riverway ecological runoff process evaluation method based on matter element analysis. The method comprises the steps that multiple existing methods are used for calculating and studying ecological flows of a drainage basin in all months, and the ecological flows are used for forming different ecological runoff processes; evaluation levels and division standards of the ecological runoff processes are determined; according to the ecological flows of all the months, matter elements to be evaluated are constructed, and according to the determined evaluation standards, classical domain matter elements and joint domain matter elements are constructed; the weight of all the evaluation indices is determined; the relevancy degree of all the evaluation indexes to all the evaluation levels and the comprehensive relevancy degree of all the evaluation levels are calculated, and the evaluation levels are determined according to the comprehensive relevancy degree; according to the evaluation levels, of the ecological runoff processes, calculated and obtained through different methods, and combined with the ecological water requirements of the studied drainage basin, the ecological runoff processes are determined comprehensively. The method constructs the evaluation standards of the ecological runoff processes, can conduct objective evaluation on the ecological runoff processes, is a new method for inquiring into the riverway ecological runoff processes, and also provides technical supports for ecological remediation of a downstream dewatering stream of a hydropower station.

Description

technical field [0001] The invention relates to a method for evaluating the ecological runoff process of a river course based on matter-element analysis, and belongs to the field of water resources management and protection. Background technique [0002] Diversion-type hydropower stations are generally built in small and medium-sized mountainous rivers with large slopes, and use pipes or channels to divert the water flow to the downstream where a large drop can be formed. Its construction led to a sharp decrease in the runoff of some river sections, resulting in the formation of dewatered river sections between the dam site and the tail water of the power plant, which had a negative impact on the hydrological regime and ecological quality of the river. In 2016, the National Energy Administration issued the "Thirteenth Five-Year Plan for Hydropower Development", requiring ecological restoration of small and medium-sized river basins with relatively prominent environmental pro...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06G06F17/50G06F17/15
CPCG06F17/15G06F30/20G06Q10/06393G06Q50/06Y02A20/152Y02A20/402
Inventor 黄显峰方国华钟婧玮戴灵辉贾永乐刘娇
Owner HOHAI UNIV
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