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Intensity-formula compiling method of urban long-duration rainstorm

A technology of rainstorm intensity and city mayor, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effect of improving accuracy

Inactive Publication Date: 2018-02-09
邵丹娜
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Problems solved by technology

[0003] The present invention aims to solve the problem that the existing urban rainwater drainage, waterlogging prevention system and sponge city planning and design need an accurate long-duration rainstorm intensity formula, and provides an urban long-duration rainstorm intensity formula that conforms to the objective reality of the region according to the actual situation of the region. Preparation method

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  • Intensity-formula compiling method of urban long-duration rainstorm
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  • Intensity-formula compiling method of urban long-duration rainstorm

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Embodiment Construction

[0013] The method for formulating the long-term rainstorm intensity formula of the city mayor includes the following steps: 1) selection of rainstorm samples, the annual maximum value method is adopted for the rainstorm sample selection method, and the rainstorm samples include local waterlogging rainstorms and historical maximum waterlogging rainstorm data; Tail processing, the calculation of rainfall duration uses 5min, 10min, 15min, 20min, 30min, 45min, 60min, 90min, 120min, 150min, 180min, 240min, 360min, 540min, 720min, 1440min, a total of fifteen durations, when the duration time period t appears When the rainfall intensity decreases significantly, the diachronic truncation is performed for the period after time t; 3) Theoretical distribution, for the selected diachronic rainfall data, on the basis of the empirical frequency curve, the theoretical frequency curve analysis is carried out, and the theoretical frequency curve Using the Pearson type III theoretical distributi...

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Abstract

The invention discloses an intensity-formula compiling method of an urban long-duration rainstorm. The method comprises the following steps: 1) rainstorm sample selection; 2) duration truncation processing; 3) theoretical distribution; 4) parameter solving, wherein four parameters of A, b, C and n are obtained by solving according to P, t and i; and 5) precision evaluation, wherein a sampling error and mean square deviation of a rainstorm formula is calculated, in a place of normal intensity, the average absolute mean square deviation is not greater than 0.05mm / min, and in a place of higher intensity, the average relative mean square deviation is not greater than 5%. The method establishes the intensity formula, which accords with objective reality of a region, of the urban long-duration rainstorm according to a real situation of the region, provides duration truncation processing, can improve precision, and more accords with a real situation of local rainfall.

Description

technical field [0001] The invention relates to the technical field of rainstorm statistics and analysis, in particular to a method for formulating a long-duration rainstorm intensity formula for a city. Background technique [0002] Rainstorm events will have a great impact on people's production and life, especially for cities, it is very important to build a long-term, excellent and reasonable urban rainwater drainage and flood prevention system, and to plan and design such a city For the rainwater drainage and waterlogging prevention system, a perfect storm intensity formula must be compiled first to make it meet the planning and design requirements as much as possible. Contents of the invention [0003] The present invention aims to solve the problem that the existing urban rainwater drainage, waterlogging prevention system and sponge city planning and design need an accurate long-duration rainstorm intensity formula, and provides an urban long-duration rainstorm inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 邵丹娜
Owner 邵丹娜