ИСТИНА

The geological engineering schematization is based on the concept of engineering geological element (EGE). According to Russian standards (SP 446.1325800.2019) (2) EGE - the main soil unit used in the creation of an engineering-geological model of a soil array. It includes some volume of the soil of the same type (subtype) and varieties when changing values the characteristics of the soil within the element randomly or under the observed pattern of change in the characteristics of the soils with the coefficient of variation for the physical characteristics of the soil ≤ 0.15, for mechanical ≤ 0.30. Despite the fact that the random nature of the distribution of properties in the EGE is present in definition, until recently, this fact wasn't paid to the construction of geological engineering models. The statistical processing of the properties of the soil was performed before creating a model. The model was itself usually deterministic character. In recent years, the situation has changed. Analysis of Russian and foreign experience allows you to distinguish four basic models describing the distribution of soil properties in mathematical modeling in engineering geology and geotechnics. Consider them on the example of solving the problem of assessing the stability of slopes by the limiting equilibrium method (LEM) based on the criterion of the strength of Mohr-Coulomb.