Keywords: drainage system, geotextile, geomembrane, geocomposite, roughness coefficient

// Мелиорация.— 2023. – №2(104) – С 17–23

The rationale is given for the need to develop promising, more effective design solutions for draining low relief elements on poorly permeable soils, taking into account the dynamics of the movement of surface and ground waters along the arable and subsurface horizon. It is proposed to use a drainage geocomposite in the form of a profiled membrane in the water-absorbing elements of reclamation systems for this purpose. Their hydraulic characteristics are noted. The technique and results of testing the membrane in a hydraulic flume are presented. It is indicated that the membrane protrusions have a significant effect on the increase in pressure losses and the reduction in flow compared to a smooth surface. The values of the roughness coefficient calculated by various formulas are given. The possibility of using geomembranes in water-absorbing devices - absorber columns is substantiated.