Method for determining construction scale of rainwater low-impact development facility

A low-impact development and determination method technology, applied in the field of rainwater low-impact development facility construction scale determination based on CMIP5 prediction, can solve problems such as lack of climate adaptability, avoid insufficient or excessive facility scale, improve prediction accuracy, The effect of reducing the frequency of occurrence

Active Publication Date: 2018-11-20
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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Problems solved by technology

[0005] In order to overcome the problem of lack of climate adaptability in existing rainwater low-impact development facility design standards, the present invention provides a method that combines CMIP5 model integration and statistical downscaling to predict future rainfall changes and apply the results to rainwater low-impact development facility design standards

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  • Method for determining construction scale of rainwater low-impact development facility
  • Method for determining construction scale of rainwater low-impact development facility
  • Method for determining construction scale of rainwater low-impact development facility

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022]In the fifth report of the IPCC, a new scenario assumption was put forward for the carbon emission budget. The Fifth Assessment Report on Climate Change has changed the previous assessment scenarios and adopted four greenhouse gas concentration scenarios, namely RCPs (Representative Concentration Pathways), which are RCP2.6 and RCP4 according to the different representative path concentrations (RCPs) from low to high. 5. For RCP6.0 and RCP8.5, a medium emission scenario RCP4.5 and a high emission scenario RCP8.5 are adopted. Familiarize yourself with the basic information of the CMIP5 global climate model by consulting a large number of documents, comprehensively select the model with higher resolution, output results daily, predict two future scenarios (RCP4.5, RCP8.5), and better simulate regional rainfall ( CMIP5 models (CMCC-CM, CNRM-CM5, FGOALS-g2...

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Abstract

The invention discloses a method for determining the construction scale of a rainwater low-impact development facility. The method comprises a step of determining a CMIP5 preferred mode, a step of integrating the CMIP5 preferred mode and carrying out downscaling correction on an integration result to obtain future predicted daily rainfall data, a step of intercepting and grouping precipitation sequences by using the future predicted daily rainfall data and historical measured daily rainfall data and calculating and obtaining the basic trend of rainfall change in each city and a design rainfallchange standard deviation and difference under a same annual runoff total rate, a step of quantitatively assessing the climate adaptability of a rainwater low-impact development facility of a targetcity and determining the design rainfall of the target city under the annual runoff total rate by using the design rainfall standard deviation and difference of the target city under the annual runofftotal rate, and a step of quantitatively optimizing the construction scale of low-impact development and control facilities in the target city according to the difference change of the design rainfall under the total control rate of the target city. According to the method, the accuracy of prediction can be greatly improved.

Description

technical field [0001] The invention relates to a method for determining the construction scale of rainwater low-impact development facilities, in particular to a method for determining the construction scale of rainwater low-impact development facilities based on CMIP5 prediction. Background technique [0002] At present, my country's "sponge city" theory is based on the "low impact development" (LID) concept of Maryland, Australia's "water-sensitive urban planning", the "sustainable drainage system" of the United Kingdom and some European countries, the United States class Nadick's concept of "green infrastructure", low-impact development (LID) and green stormwater infrastructure (GSI) is a new, efficient, green, ecological stormwater control and utilization concept and technical system, with a wide range of environmental benefits , economic and social benefits. Low-impact development tends to adopt decentralized and low-cost control measures to control and manage runoff fr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/26G01W1/14
CPCG01W1/14G06Q10/04G06Q50/26Y02A90/10
Inventor 张质明胡蓓蓓
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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