STABILITY OF EARTH STRUCTURES TAKING INTO ACCOUNT THE SPATIAL EFFECT
DOI:
https://doi.org/10.31650/2786-6696-2023-3-98-110Keywords:
soil structure, stability factor, artificial embankment, landslide slope, soil slope, stability, relief forms, calculation method, three-dimensional scheme, two-dimensional scheme.Abstract
Problems of stability of soil structures and the development of landslides, including the Black Sea coast, pose a significant danger to the population and existing buildings and structures. The development of landslides and landslide-prone slopes requires careful and detailed study, the results of which should be the basis for the implementation of measures for engineering protection of territories, taken into account in the design and construction of new facilities. When calculating the stability of slopes, there is a difference in the calculated values of the coefficients of stability in two-dimensional and three-dimensional problem statements. Analysis of the research indicates the need to take into account the influence of topographic conditions of the entire slope when calculating it in two-dimensional schemes within the designated areas.
Determination of the coefficient of stability can be carried out by both analytical and graph-analytical methods. In most cases, the calculation of the stability of slopes and escarpment and the determination of the coefficient of stability is performed for two-dimensional sections constructed on lines that coincide with the most probable direction of shift of the shear body.
The most common methods used in calculating the stability of slopes in a two-dimensional problem statement are the most used because of their simplicity, but these methods are based on the acceptance of some assumptions described above. Based on the analysis of a number of works on two-dimensional and three-dimensional modeling of soil slopes, it is shown that the assessment of the stability of landslides is a complex, responsible and poorly studied task.
Performing calculations of soil slopes in the three-dimensional formulation of the problem gives results close to reality, in contrast to the results obtained by conventional and common engineering methods for two-dimensional schemes. This is due to the fact that the three-dimensional formulation of the problem takes into account the combination of engineering and geological conditions of the entire slope. Three-dimensional modeling of soil slopes also allows taking into account factors that have a significant impact on stability, which cannot be taken into account in two-dimensional modeling (features of topography, the presence of trimming slopes, ravines, point structures, etc.).
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