Selection of Soil for Transition Layers in Earth Dams on the Example of the Świnna Poręba Dam

The article presents considerations on the principles of soil selection for transition layers in earth dams, both of which also act as reverse filters. It focuses on the identification of phenomena related to filtration, in particular internal erosion of earth structures and effective methods of its prevention. The analysis of the most common principles and criteria of soil selection for the transition layers was made. The selection of soils for the transition layers of the Świnna Poręba Dam was verified.