BARROS, Helder M. M.; SANTOS, Michele S.; AZEVEDO, Carlos A. V.; D. NETO, José.; LIMA, Vera L. A.
Resumo:
The purpose of this research was to evaluate the hydraulic performance of different
subsurface drainage systems under laboratory controlled conditions, using a sand tank horizontal
physical model. The drainage systems were composed by the following materials: smooth PVC pipe
for sewage, Drenoflex corrugated flexible PVC pipe,Kananet corrugated flexible polyethylene pipe of
high density from the Kanaflex and the envelopes made of OP-20 bidim polyester synthetical blanket
and zero crush. Respecting to inlet hydraulic head, all drainage systems were classified as regular.
Regarding the entrance resistance, it was verified significant difference for all drainage systems.Also,
it was verified that the smaller values for the entrance resistance were obtained with the use of zero
crush envelope. All drainage systems were classified good to very good. Regarding the outflow, it was
verified that all drainage pipes with bidim and zero crush envelopes didn't presented difference. For all
drainage systems, the highest and lowest discharges were fund with the use of zero crush and bidim
envelopes, respectively.
