The objective of the research is to determine the stability of one- and two-chambered dams at different hydraulic operation conditions and develop a new construction which provides better stability comparing with existing ones. Computational modeling by the software ANSYS and experimental study on physical model of mobile protective dam at the changing of internal pressure and depth of water in the upstream were conducted. The results enable to determine the relations for travel of one- and two-chambered casing to the depth of water in the upstream at different values of relations of conformity to a height, Â/Í, as well as the relation of critical depth of water in upstream to the pattern of casing, hêð/Í, which characterized by the ratio of conformity to a height, Â/Í. It is proved that stability of two-chambered casing is better than of one-chambered by 7-18 % at Â/Í equals to 0.2-2.5. However, its shear stability doesn’t provide at hâá/Í ≥ 0.68-1.2 and Â/Í in the range of 0.5 to 2.5, what is necessitated the creation of new solution for mobile protective dam. Since the stability of the dam foundation provided by a system of anchors, design justification of their parameters was developed. The application of the new technical solution increases the stability of mobile protective dam by 300 % comparing with two-chambered unfixed construction.
Keywords: two-chambered dam, computational modeling, stability, critical depth of water, travel.
