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Non-consistent two-variable design flood derivation method based on hydrothermal coupling balance

A water-heat coupling and consistent technology, applied in computing, climate sustainability, climate change adaptation, etc., can solve problems that have not been reported in the literature

Active Publication Date: 2019-10-25
WUHAN UNIV
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Problems solved by technology

However, there is no literature report on the application of the Budyko formula to carry out the flood calculation of the non-uniform two-variable design under the changing environment

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  • Non-consistent two-variable design flood derivation method based on hydrothermal coupling balance
  • Non-consistent two-variable design flood derivation method based on hydrothermal coupling balance
  • Non-consistent two-variable design flood derivation method based on hydrothermal coupling balance

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Embodiment Construction

[0058] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples and accompanying drawings. As a limitation of the present invention.

[0059] see figure 1 , a non-uniform two-variable design flood calculation method based on hydrothermal coupling balance, including the following steps:

[0060] Step 1, basic meteorological and hydrological data collection and sampling

[0061] Collect the daily precipitation, temperature, wind speed, relative humidity, sunshine duration, measured evapotranspiration and multi-year long-term sequence observation data of the control hydrological station flow in the basin, from which the annual maximum flood peak, the annual maximum 7-day runoff, saturated water pressure, actual water flow Air pressure, surface net radiation, soil heat flux, psychrometer constant.

[0062] Step 2, basic data processing: Usin...

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Abstract

The invention relates to the technical field of reservoir flood control safety design, and discloses a non-consistent two-variable design flood derivation method based on hydrothermal coupling balance, which comprises the following steps: establishing a basin hydrothermal coupling balance equation by collecting and researching daily rainfall, air temperature, wind speed, relative humidity, sunshine duration, actually measured evapotranspiration and multi-year long sequence observation data of a basin, and analyzing annual average underlying surface characteristic parameters of the basin; deducing a flood univariate distribution function under a non-consistency condition according to the hydrothermal coupling balance equation; based on non-consistency characteristic of flood peak quantity related structure, adopting a Gumbel-Hougaard Copula (G-H Copula) method for establishing flood peak-flood quantity combined probability distribution function and solving a design flood peak quantity design value under a non-consistency condition. According to the method, the influence of climatic changes and human activities on flood characteristics can be fully considered, and meanwhile, flood peaks-flood quantity most probable flood volume combination model provides an important and feasible reference basis for deducing inconsistent reservoir two-variable design flood in a changing environment.

Description

technical field [0001] The invention relates to the technical field of flood control safety design of reservoirs, in particular to a flood derivation method based on non-uniform two-variable design of hydrothermal coupling balance. Background technique [0002] Design flood is an important basis for determining the construction scale of water conservancy and hydropower projects and formulating operation management strategies, and is of great significance for guiding reservoir operation scheduling and comprehensive planning and utilization of water resources. The traditional design flood calculation in my country generally assumes that the hydrological series obeys the consistency, and uses the method of combination of peak volume and frequency to determine the design value. The same-frequency combination method fails to fully explore the inherent laws of hydrological events, making it difficult to scientifically assess flood risk. In addition, due to the impact of climate c...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20Y02A10/40Y02A90/10
Inventor 顾磊陈杰明波王惠民尹家波
Owner WUHAN UNIV