Lybov S. The Formation of the vertical geotechnical constructions by the explosion in soil body of the periodic structure

The thesis considers the development of the new methods of forming the geotechnical characteristics of the natural and manmade soil body with the unstable strength indicators and periodic structure. In this study we solved the scientific and applied problems of the increase of the operational reliability buildings and constructions due to the increased load-bearing capacity and stability of the bodies and sliding slopes applying cementing mixtures and high-performance manufacturing technologies for soil treatment by the explosion energy that are important in the modern conditions of the geotechnical underground construction. Based on the mathematical modeling of the explosion chamber development with the presence of the plugging material in the loading hole, the phenomenon of the triple cyclic growth- fall of the value of the average hydrostatic pressure in an explosive pulse in time is discussed. This leads to an increase in the pulse duration and the mechanical effect of the explosion, allowing adjusting the parameters of the pressure wave in the soil, depending on the strength parameters of rigid constraints, physical and mechanical parameters of the soil environment and the geometry of the structure. Key words: three-component soil ground, rigid constraint, physical and mechanical properties, plugging material, strain pulsation, explosive compaction.