FIELD: physics.
SUBSTANCE: method of determining mechanical parameters of a disrupted material medium in fixed external action conditions includes determining an external action physical parameter which is definitive for the analysed medium - temperature T(°C), density ρ (kg/cm3), gravitational acceleration (g, m/s2) and material body acceleration (α, m/s2), optical radiation, radioactivity, electrical and magnetic action; setting the required mechanical parameter of the material medium taking into account the effect of physical definitive parameters of the external action; determining internal friction angle 
and specific cohesion sstr (kG/cm2) of the structured (natural) medium. Parameters of the internal friction angle 
and specific cohesion sn of the disrupted medium are determined under fixed external action conditions using the expression
(kG/cm2), and mechanical parameters of the material medium are determined using the determined parameters and sn, and sstr in given external action conditions.
EFFECT: enabling determination of known mechanical parameters of a disrupted material medium through universal physical strength parameters - internal friction angle and specific cohesion, which are inherent to all material media in a structured or disrupted state.
