Dynamics of the water infiltration process in permeable pavement using in situ experimentation and numerical simulation with hydrus-2D

Abstract

ABSTRACT This work presents a two-dimensional simulation of infiltration dynamics in a real permeable pavement (PP) structure in the city of Recife, representing more realistically the geometry of the infiltration bulb and the dynamics of water redistribution processes in the PP. Sixteen infiltration tests were carried out on the PP using the Beerkan method. The hydrodynamic parameters of the PP surface were determined by applying the inverse method to the infiltration data. Simulations of water transfer processes were carried out with Hydrus-2D using the hydrodynamic properties corresponding to the highest and lowest saturated hydraulic conductivity observed on the surface. Satisfactory infiltration characteristics were observed in the PP. The inverse method showed good adjustment capacity to the accumulated infiltration curves and estimation of hydrodynamic properties. Simulations using Hydrus-2D demonstrated that the infiltration process and water redistribution in the subgrade depend on the hydrodynamic properties of the coating.

Keywords

• Hydrus-2D
• Infiltration
• Compensatory technique
• Beerkan Method