A Method for Determination of Rainstorm Intensity Formula Based on Rainstorm Attenuation Characteristics
A technology of rainstorm intensity and attenuation characteristics, applied in the field of rainstorm statistical analysis, can solve the problem of difficulty in coordination of rainstorm formula preparation methods, and achieve the effect of solving the limitation of application scope, overcoming inconvenience of use, and improving coordination.
Active Publication Date: 2021-04-02
HOHAI UNIV
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[0004] Purpose of the invention: In view of the deficiencies in the prior art, the present invention proposes a long-duration rainstorm intensity formula determination method based on the rainstorm attenuation characteristics, which solves the technical problem that the existing municipal and water conservancy industry rainstorm formula preparation methods are difficult to coordinate, and improves the rainstorm intensity formula. Accuracy
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[0018]The technical solutions of the present invention will be further described below with reference to the accompanying drawings.
[0019]Such asfigure 1 As shown, a storm strength formula determined based on heavy rain attenuation characteristics, including the following steps:
[0020]Step (1), build a storm data statistics;
[0021]Heavy rain sample screening method Prior to the year maximum method, the year's largest method is applied to the region with more than 30 years of self-recorded rainfall, if the statistics are less than 30 years, the year is used in a number of ways. In an embodiment, a weather station 1981 to 2016 was collected from a minute rainfall data, and the year's largest method was used to construct 5 min, 10 min, 15 min, 20min, 30min, 45min, 60min, 90min, 120min, 150min, 180min, 240min, 360min, 720min, 1080min, 1440min a total of 16 largest rainfall years of annual years.
[0022]Step (2), select the P-III distribution line type to perform the maximum rainfall frequenc...
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The invention provides a rainstorm intensity formula determination method based on rainstorm attenuation characteristics. The rainstorm intensity formula determination method comprises the following steps: (1) constructing a rainstorm data statistical sample according to actually measured rainfall data; (2) selecting a distribution line type to carry out frequency analysis on the maximum rainfallin different years, and calculating theoretical design rainstorm intensities it and T of different durations t and different recurrence periods T; (3) analyzing rainstorm intensity attenuation characteristics, and calculating a comprehensive rainstorm intensity attenuation index n; (4) establishing a function relationship between the rain force ST and the recurrence period T, and solving rain force formula parameters A and B; and (5) compiling a rainstorm intensity formula. On the basis of fully considering the actual rainstorm intensity attenuation law of the region, the long-duration rainstorm intensity formula compatible with municipal drainage and water conservancy flood control requirements is established, and the parameter determination method based on the rainstorm attenuation characteristics is proposed, so that the deduced rainstorm intensity formula can better meet the actual physical law, and the method is suitable for popularization and application. The invention has the advantages of easy operation and high precision.
Description
Technical field[0001]The present invention relates to a storm statistical analysis method, and more particularly to a long-term storm strength formula determination method based on heavy rain attenuation characteristics, which can be used for municipal, water conservancy engineering design.Background technique[0002]Flood control is an important foundation for national security and social stability. It is an important baseline constraint for the high quality development and high quality life. However, in the context of global climate change and high-intensity urbanization, the frequency of rainstorm, intensity increases, and severely threatens the safety of people's lives and property and the sustainable development of social economy. In order to effectively improve urban flood control and disaster reduction engineering capabilities, reduce urban flood disaster risks, it is necessary to consider the interaction of urban pipe network drainage, regional excess flood flood flood control...
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IPC IPC(8): G06F17/11G06F17/18G06Q50/26
CPCG06F17/11G06F17/18G06Q50/26Y02A10/40
Inventor 李琼芳周正模许树洪陈启慧任黎和鹏飞杜尧韩幸烨严方家曾天山
Owner HOHAI UNIV