Ecological Systems and Devices Annotation << Back The breakdown analysis of mud protective constructions of the arch-step with using catastrophe theory Gavardashvili G.V. For effective protection of settlements and economic objects from destructive action of mud flows the constructive characteristic mud protective constructions of the arch-step form is offered. Applying the theory of catastrophe it is established, that failure of mud protective constructions of the arch – step form is described by catastrophe of «return assembly».