Water conservancy rainfall pattern peak-based city long-duration design rainstorm rainfall pattern creation method

Abstract

The invention discloses a water conservancy rainfall pattern peak-based city long-duration design rainstorm rainfall pattern creation method, and belongs to the crossing field of city municipal drainage systems and city drainage waterlogging prevention systems. According to the method, through proceeding from the demands of the long-duration rainstorm rainfall patterns of the city drainage waterlogging prevention systems, statistics and classification are carried out on the standard city weather rainfall characteristic data (.dat file) by adopting a mathematical statistical method so as to obtain the actual typical rainfall process under the same frequency; and then same-frequency peak removal positioning is carried out on the typical rainfall according to the rainfall pattern long-duration design rainstorm rainfall pattern peak provided by the local water conservancy department so as to finally obtain the city long-duration rainstorm rainfall pattern. The main operation steps are rapidly realized through computer programs. According to the method provided by the invention, the same-frequency peak removal positioning of the water conservancy peak is carried out through the typical duration rainfall after the statistics, so that the roughness of the traditional rainfall pattern creation method is greatly refined and the new city long-duration design rainstorm rainfall pattern more accords with the local real rainfall statistical law; and by means of simple and easy operations under platforms such as computer Excel and the like, the method can be realized.

Description

technical field [0001] The invention relates to a method for making a long-duration heavy rain pattern based on the peak value of a water conservancy rain pattern, and belongs to the technical intersection field of an urban municipal drainage system, an urban drainage system and a water conservancy flood control system. Background technique [0002] The premise of urban drainage and waterlogging prevention system planning and design is to have a clear understanding and research on the urban rainfall situation and law, and to have an urban design rainstorm pattern suitable for the rainfall law in the region. The long-term rainstorm pattern of the city is the basic basis for determining the design flow of urban waterlogging prevention facilities and the planning and design of urban drainage and waterlogging prevention systems. With the acceleration of urbanization, extreme rainfall events occur frequently, the peak of rainfall floods is advanced, the amount of floods increases...

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly aims to solve the scientific problems such as the complexity of the current urban traditional rain pattern production method and the lack of consideration of whether it has local representativeness from the practical engineering point of view.

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