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A method and system for probabilistic analysis of multi-source flood process encounters

A probabilistic analysis and flood technology, applied in the direction of climate change adaptation, complex mathematical operations, etc., can solve the problems of complex modeling and large errors, and achieve the effect of simple modeling, small errors, and overcoming the limitations of cognition

Active Publication Date: 2021-08-10
BUREAU OF HYDROLOGY CHANGJIANG WATER RESOURCES COMMISSION +1
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Problems solved by technology

[0004] Aiming at the deficiencies or demands of the prior art, the present invention aims to provide a method and system for probabilistic analysis of multi-source flood encounters, thereby solving the problem of complex modeling and large errors in the calculation of the probability of multi-source flood encounters in the prior art technical issues

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  • A method and system for probabilistic analysis of multi-source flood process encounters
  • A method and system for probabilistic analysis of multi-source flood process encounters
  • A method and system for probabilistic analysis of multi-source flood process encounters

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[0047] In order to make the purpose and method of the present invention clearer and intuitive, the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention rather than limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0048] Such as figure 1 As shown, a schematic flow chart of a method for probabilistic analysis of a multi-source flood process encounter provided by the present invention comprises the following steps:

[0049] (1) Using the annual maximum sampling method, collect the annual maximum 7-day, 15-day or 30-day flood process data in the watershed (determined according to the size of the watershed), and obtai...

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Abstract

The present invention proposes a method and system for probabilistic analysis of multi-source flood process encounters, which belongs to the field of hydrological analysis and calculation in hydrology. The method includes: using the annual maximum method to collect and screen the annual maximum N-day flood process data in the watershed to obtain The flood rise time, end time and annual maximum N-day flood value of the annual maximum N-day flood process; propose a new definition method for multi-source flood process encounter; establish main and tributary streams, upstream and downstream multi-sources that comprehensively consider flood occurrence time and magnitude Flood process encounter model. The present invention comprehensively considers the time lag of multi-source flood process and the correlation of flood magnitude and other practical factors, breaks through the technical bottleneck that the existing flood process encounter method is difficult to evaluate the probability of 3-dimensional and above flood process encounter, and the modeling is simple, The error is small, which provides a scientific basis and effective support for improving the flood control capacity of the river basin and ensuring the safety of flood control objects.

Description

technical field [0001] The invention belongs to the field of hydrological analysis and calculation, and more specifically relates to a method and system for probabilistic analysis of multi-source flood process encounters. Background technique [0002] The flood in the basin is often formed by the encounter of the upstream and downstream, main and tributary floods. When the floods are encountered, the flood peaks or flood volumes will be superimposed to varying degrees. At present, the commonly used flood encounter calculation method is still the statistical analysis of synchronous historical data, which cannot estimate the probability of flood encounter once in T years. The flood encounter problem is essentially a multivariate frequency combination problem, which can be studied by using multivariate hydrological analysis and calculation methods. Existing methods usually use the Copula function to establish a multivariate joint distribution for calculation, but most studies ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/18G06F17/15
CPCG06F17/15G06F17/18Y02A10/40
Inventor 徐高洪陈璐仇红亚徐长江邴建平戴明龙李妍清齐尧乐葛林松张冬冬陈玺刘冬英黄燕李立平王含汪青静
Owner BUREAU OF HYDROLOGY CHANGJIANG WATER RESOURCES COMMISSION
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