Repavimentação asfáltica da avenida Ministro João Alberto entre os quilomêtros 0 e 2 no munícipio de Barra do Garças-MT: estudo da influência na drenagem urbana

Abstract

With the reduction of permeable areas due to the effects of urbanization, it is necessary to implement urban drainage systems to assist in the capitation of flow rates, so as to relieve peak floods in more urbanized regions. The objective of this study is to analyze the effects of the resurfacing in the stretch that comprises the kilometers 0 and 2 of the Avenida João Alberto avenue to the drainage system installed in the road, in order to verify the influence in the increase of the surface run-off and the compromise of the devices draining. To do so, through the quantitative and applied methodology, the characterization of the elements that compose the present drainage system (gutter, mouth-of-wolf, visitor's well) was carried out, in order to evaluate its hydraulic capacity and through review the classification of the lane to which the drainage system is installed. By means of the rational method, the present drainage system was inefficient, due to the alteration caused by the successive resurfacing process, which significantly increased the height of the runway layer, modifying the profile of the gutter element. By means of the same rational method, it was possible to establish a resizing of the drainage system and a quantitative comparison between a possible project and the current situation of such drainage system, which allows to conclude that in fact the effects of resurfacing were contributors to the increase in surface run-off, since 97.664% of the gutters were altered and 47.05% of the lobsters were damaged. Therefore, the plausible measure to ameliorate these effects was the resizing of the drainage system.