Modelación hidráulica para la determinación de la eficiencia de los sumideros de aguas lluvia

Abstract

The need to find an optimal way to locate the sinks on urban roads. When observing that several roads in the center of our city collapse with a minimum amount of rainwater, taking into account that water is very erosive for roads when it is in a stagnant state when they do not have good drainage, it also affects the free movement of vehicles and pedestrians; These parameters have been a motivation to carry out the present investigation. It is also necessary to mention that the MTOP does not have a fixed standard to locate the sinks. A hydraulic model was made at a scale of 1: 4 simulating a half way, made of wood duly covered with anticorrosive paint which is adapted to a water recirculation system; this prototype is supplied by means of a hydraulic channel. On the right central bank of the road, the different T45 grids were located, assuming several scenarios with the same in total, 5 placing the grids in different positions and varying the number of them creating different scenarios.

We worked with flows in the model (real scale) of 20.74,48.17,79.11 and 111.65 liters per second and with flows in the prototype (scale 1: 4) of 0.5, 1.5.2.5 and 3.5 liters per second. The longitudinal slopes were varied using values of 0.5%, 4%, 8% and 12% and transversal or pumping of the road with 2% and 4%. The volumetric method was used to calculate the output flow captured in the sump. 8 combinations were made for each scenario varying the slopes and the flow; obtaining uptake efficiencies between 10 and maximum of 90 percent. With the data obtained, a program was carried out to calculate the efficiency and the flow captured in the drains for different topographic and hydrological scenarios.