Algoritmo para Determinação da Equação de Chuvas Intensas (Algorithm to Determine the Equation of Intense Rain)
DOI:
https://doi.org/10.26848/rbgf.v6i5.233110Keywords:
Recursos hídricos, Equação IDF, Distribuição Gumbel.Abstract
Estudos hidrológicos regionais são necessários em obras de engenharia relacionadas ao planejamento e aproveitamento dos recursos hídricos, pois eventos extremos de precipitações estão diretamente relacionados com os custos e a segurança das obras de aproveitamento hídrico, tais como: sistema de drenagem de águas pluviais, canais e bacias de detenção. O objetivo principal deste trabalho foi desenvolver e aplicar um algoritmo para determinação de parâmetros das equações IDF - Intensidade-Duração-Frequência, visando tornar o processo ágil a partir dos dados disponíveis de precipitação. Foi elaborada uma rotina computacional através da integração dos dados através de planilha eletrônica e software estatístico, que compreende regressões lineares múltiplas e processos gráficos. O algoritmo foi aplicado para obtenção da equação IDF para o município do Recife. Foi realizada a extrapolação de dados históricos de séries anuais através da distribuição de probabilidade de valores extremos de Gumbel, verificando-se sempre o ajuste dessa distribuição aos dados através do teste de Kolmogorov-Smirnov. A seguir, através da aplicação do algoritmo foram calculados os parâmetros da equação IDF para o respectivo posto pluviográfico, obtendo-se resultados satisfatórios. A B S T R A C T Regional hydrological studies are required on engineering works related to planning and use of water resources because of extreme precipitation events are directly related to the cost and safety of the works of water use, such as: drainage system rain water channels and basins detention. The main objective of this work is to develop and apply an algorithm for determining parameters of the equations IDF - Intensity-Duration-Frequency, designed to make the agile process from data available for precipitation. Was developed a computational routine by integrating data through spreadsheet and statistical software, which comprises multiple linear regressions and printing processes. The algorithm was applied to obtain the equation for the IDF city of Recife. We performed the extrapolation of historical data series of annual means of the probability distribution of extreme values of Gumbel, always checking the fit of this distribution to data using the Kolmogorov-Smirnov test. Then, by applying the algorithm parameters were calculated from the equation for the IDF pluviometric respective station, obtaining satisfactory results. Keywords: Rainfall intensity. Equations IDF. Gumbel Distribution.Downloads
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Copyright (c) 2013 Simone Rosa da Silva, George Rodrigues de Sousa Araújo

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