Estudo de viabilidade técnica e de vantagens de implantação de poços de infiltração intralote em rede de drenagem de loteamento

Abstract

Urban growth without proper planning brings negative impacts to the natural urban drainage system and to the hydrological cycle, as it provides the impermeabilization of the natural surface, preventing the infiltration of rainwater into the soil. Conventional urban drainage has not performed well, because it aims only to transfer the impacts from upstream to downstream without proper treatment. In this way, sustainable urban drainage aims mainly at reducing surface runoff, which happens principally through control measures at the source through the infiltration of excess rainwater runoff, providing improvements in the quality of infiltrated water and the implementation of devices with low environmental impact. This work aims to develop a comparative analysis between the two urban drainage systems, the conventional and the sustainable one, analyzing the flow, efficiency and technical feasibility of both. For this, the project and dimensioning of the mentioned drainage systems was carried out, delimiting the contribution areas according to the topography and for a second moment carrying out the resizing of the network considering the implantation of the infiltration devices in order to carry out the comparison. The conventional drainage system totaled 43 storm drains with a 9% reduction for the sustainable drainage system. With similar quantities, both projects are technically feasible, highlighting the environmental benefits and the aesthetic value added to urban areas by the sustainable system.