Most probable combination method of design flood peak amount condition based on Copula function

A technology for designing floods and combination methods, applied in design optimization/simulation, calculation, electrical digital data processing, etc., can solve problems such as lack of combined analysis of hydrological eigenvalues

Inactive Publication Date: 2018-11-23
HOHAI UNIV
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Problems solved by technology

At present, there is no research on the design of flood peak discharge and the calculation method of the most likely combination value of flood volume in each period based on the Copula function, and there is a lack of reliable combination analysis of hydrological characteristic values ​​(peak discharge, flood volume in each period)

Method used

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  • Most probable combination method of design flood peak amount condition based on Copula function
  • Most probable combination method of design flood peak amount condition based on Copula function
  • Most probable combination method of design flood peak amount condition based on Copula function

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Embodiment Construction

[0057] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, examples of said embodiments are shown in the accompanying drawings, and the embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention, and It should not be construed as a limitation of the invention.

[0058] Concrete process of the present invention sees figure 1 , including the following steps:

[0059] Step 1: Collect and extract the annual maximum flood peak discharge of the measured flood series and its corresponding flood data in each period;

[0060] In this specific example, the annual maximum flood peak flow in 116 years and the corresponding three-hour period flood data of this flood were collected and sorted out, and the data of 8 historical major floods were added.

[0061] Step 2: Use the P-III type distribution function to fit the peak discharg...

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Abstract

The invention provides a most probable combination method of a design flood peak amount condition based on a Copula function. A joint distribution function of the flood peak amount and the flood amount in each period of the measured flood event constructed by the Copula function and a most probable combination value of the flood peak amount and the flood amount in each period of different flood control tasks calculated based on the derived multivariate condition most probable combination formula provide important references for designing the design flood design standards, and a new approach for analyzing the peak amount combination of design flood.

Description

technical field [0001] The invention relates to the field of joint probability analysis, in particular to a method for the most probable combination of design flood peak conditions based on Copula functions. Background technique [0002] The design flood refers to the flood with a certain standard and a specific function. Its function is to analyze and calculate the flood frequency with the frequency equal to the design standard to obtain the corresponding design flood, and then use this as the basis for the flood control safety of the planned and designed project. The accident risk rate is exactly equal to the established design criteria [1]. As we all know, the construction of water conservancy projects plays an important role in resisting floods, and is an effective non-engineering measure to reduce flood disasters and other problems. The hydrological frequency analysis and calculation is an indispensable and important link in the planning and design of water conservancy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20Y02A10/40
Inventor 石朋牟时宇瞿思敏陈颖冰
Owner HOHAI UNIV
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