Regional available water supply estimation method considering multi-water-source joint probability distribution

A technology that combines probability distribution and water supply volume, applied in resources, calculations, complex mathematical operations, etc., can solve problems such as the inability to accurately quantify the correlation of water supply sources, describe the uncertainty of water resource systems, and achieve high accuracy and quantitative correlation sexual effect

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A technology that combines probability distribution and water supply volume, applied in resources, calculations, complex mathematical operations, etc., can solve problems such as the inability to accurately quantify the correlation of water supply sources, describe the uncertainty of water resource systems, and achieve high accuracy and quantitative correlation sexual effect

CN113033014AActive Publication Date: 2021-06-25BEIJING NORMAL UNIVERSITY

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[0035] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, features and effects of the application according to the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. .

[0036] Taking the regional water supply of Xiong'an New Area as an example, the method for estimating the regional water supply of the present invention will be further described.

[0037] Xiong'an New Area is located in the Daqing River Basin. The sources of water are divided into two parts: inside the basin and outside the basin. Specifically, it includes five aspects: clear water production in the upper reaches, joint water diversion of reservoirs in the basin, diversion of the Yellow River into Hebei to replenish lakes, south-to-north water diversion project and recycled water . Therefore, the different water s...

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Abstract

The invention relates to the field of water resource planning and management, in particular to a regional water supply amount estimation method considering multi-water-source joint probability distribution. The method comprises the following steps: analyzing a plurality of water supply sources in a set area to obtain runoff data; respectively calculating a correlation coefficient between every two water supply sources, and judging the correlation of the water supply source runoff series; aiming at the water supply sources with relatively strong correlation, utilizing a Copula function to obtain a joint probability distribution function, and carrying out hydrological plump and heave situation analysis on the plurality of water supply sources to obtain runoff volumes of the plurality of water supply sources under different plump and heave situations; for a water supply source with relatively weak correlation, drawing an annual runoff frequency curve based on a P-III type curve to obtain runoff under different hydrological guarantee rates; and determining the water supply amount of the upstream reservoir in the high, middle and low precipitation years by combining the water storage requirement of the reservoir and the ecological base flow requirement of the river. According to the method, the uncertainty of water supply change caused by runoff change is considered, and a quantitative basis is provided for optimal allocation of regional water resources.

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Application Information

Patent Timeline

25 Jun 2021

Publication

CN113033014A