Fixing the slopes of the channel with combined expansion and filter seams
To combat filtration losses on irrigation canals, various types of protective coatings are used. Monolithic and prefabricated reinforced concrete cladding, asphalt concrete coatings, cladding with the use of polymer films are widespread. Initially, the groundwater level in these areas is below the mark of the canals. Therefore, the task at the first stage of operation of structures is to eliminate filtration losses from the channel. In the future, due to infiltration from the above canals, reservoirs and irrigation of adjacent territories, groundwater is supplied and groundwater levels rise above the canal mark. It is obvious that this situation can lead to adverse consequences, especially when the water level in the canal drops rapidly. At the same time, significant hydrodynamic pressures of water, which can cause the destruction of slopes, will have to act on the cladding. Therefore, the study of the protection of the canal lining from the effects of these filtration waters is of great practical importance.