Proposta de dimensionamento de poço de infiltração para a cidade de Dourados/MS como medida sustentável para controle de drenagem urbana na fonte

Abstract

Compensatory microdrainage techniques are engineering practices used to minimize the negative impacts of urbanization on the hydrological cycle. Urbanization generally implies an increase in soil sealing and, consequently, a decrease in water infiltration. Faced with the growing demand for sustainable alternatives to contain the problems caused by conventional urban drainage and the legal possibility of carrying out microdrainage systems in the municipality of Dourados, this paper was dedicated to addressing the method of dimensioning an infiltration well with the objective of guide the application of this source control method. The proposed methodology was based on the application of the “curva envelope” method to determine, through the IDF relation, the maximum difference between the precipitation volume and the infiltrated volume resulting in the dimensioning volume. The calculations resulted in a well with a storage capacity of 12.27 m³ meeting the maximum precipitation volume of 11.64 m³, meeting the system performance requirements.