The aim of research is to develop and substantiate the engineering solution efficiency of pond dams and dams with membranes from inclined filled soil layers. Anti-filtration devices in the body of water-retaining structures (membranes, cores, etc.) reduce the piezometric slopes of the filtration flow, decrease the depression curve, increase the stability of downstream slope and the filtration strength of structures as a whole. Thus, they minimize dangerous defects and deformations – suffusion, formation of filtration passages and openings, scours, uplifts, etc. Taking into account financial and resource opportunities available in the industry, such devices should not only differ by the required operational reliability, but also be technologically simple, do not require additional energy inputs and scarce materials, rely on existing machines, mechanisms and raw materials. The research is based on scientific papers of academicians N. N. Pavlovsky and Ye. A. Zamarin on a smoothly changing filtration flow using the widely spread Dupuis formula. The construction of an earth pond dam is proposed, which contains an anti-filtration device in the form of a membrane made of compacted layers of low permeable soil, filled at an angle to the horizon. The calculated substantiation of membrane efficiency from inclined filled layers of low permeable soil is performed. When compared with the membrane from the horizontally filled soil layers, a decrease in the filtration flow rate by 1.5–2.0 and a reduction of the filtration flow seepage height to the downstream slope by no less than 1.2–1.5, which will ensure a high level of filtration strength and stability, prevent damage and defects, and thus reduce the costs of repair and maintenance and emergency work on ground dams of ponds and water bodies for reclamation use.
Key words: safety, reliability, pond, dam, dike, anti-filtration membrane, core.
