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Forecasting system and method for urban rainstorm ponding simulation real-time verification

A technology of urban rainstorm and forecasting system, which is applied in the field of forecasting system of urban rainstorm and stagnant water simulation in real time, can solve problems such as large deviation of model calculation results, influence of drainage system, blockage of sewer mouth, etc., to increase calculation stability, The effect of improving accuracy, improving reliability and stability

Pending Publication Date: 2022-07-01
河北省气象灾害防御和环境气象中心(河北省预警信息发布中心)
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Problems solved by technology

[0004] At present, the input field of most storm waterlogging models at home and abroad only considers the rainfall and pre-set related parameters in the simulation calculation, and there is no real-time accumulated water depth data substituted into the model to correct the simulation results in real time, while the actual operation of the drainage system It is often greatly affected by human factors, such as whether the surrounding pump stations, gates and other drainage facilities are opened in time, the sewer mouth is blocked by garbage, and the drainage network is aging. In most cases, the working status cannot meet the pre-set parameter conditions of the model, making There is a large deviation between the model calculation results and the actual situation

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  • Forecasting system and method for urban rainstorm ponding simulation real-time verification

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Embodiment Construction

[0030] A forecast system for real-time certification of urban rainstorm water simulation, using finite volume method to establish the classification and zoning model of river network, road network, pipe network and community within the city, forming the structure and logical relationship between classification and zoning;

[0031] According to the data of rainfall stations, use the Tyson method to gridize the rainstorm distribution, and consider the influence of confluence, pipeline network, building rate in the grid, and surface permeability on the water depth of the underlying area;

[0032] Assimilate the real-time results of model calculation and simulation and the real-time results of water accumulation monitoring. The assimilation parameters are based on the concept of water volume equivalence based on the synthesis of the runoff coefficient and the drainage coefficient. It is close to the result of stagnant water monitoring.

[0033] Further, the city model is specifica...

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Abstract

The invention belongs to the technical field of meteorological prediction, and particularly relates to a forecasting system and method for urban rainstorm ponding simulation real-time verification. The invention aims to solve the technical problem of a forecasting mode of urban rainstorm real-time certification, and provides a forecasting method of urban rainstorm real-time certification. Model calculation and accumulated water monitoring assimilation processing are adopted to determine a local production and confluence coefficient and a drainage coefficient, and the model is a mathematical mode which is completed through assimilation parameter verification based on data assimilation of a model calculation result and an accumulated water monitoring result; the provided mode can improve the precision of urban rainstorm forecast simulation, the calculation efficiency can be improved by correcting the production and confluence coefficient and the drainage coefficient in real time, and the calculation stability can be improved by adopting model calculation and accumulated water monitoring assimilation processing.

Description

technical field [0001] The invention belongs to the technical field of meteorological forecasting, and in particular relates to a forecasting system and method for simulating real-time certification of urban rainstorm water accumulation. Background technique [0002] In recent years, with the global warming and the accelerating urbanization process, extreme heavy precipitation frequently occurs in major cities in China during the flood season. When the precipitation exceeds the drainage capacity of the city, it will lead to the occurrence of urban waterlogging disasters. People's production and life, life and property safety have brought great harm, and it has become an important factor affecting urban public safety. Scientifically using the rainstorm and waterlogging mathematical model to carry out water accumulation prediction, improve the urban waterlogging disaster risk early warning service ability, and minimize the loss of waterlogging disasters are important issues th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F111/10
CPCG06F30/20G06F2111/10
Inventor 魏军陈笑娟魏铁鑫李婷彭相瑜徐艺芙
Owner 河北省气象灾害防御和环境气象中心(河北省预警信息发布中心)
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