cracks

Geodynamics of Tereblja-Riksky technogenic range

On the basis of results of the complex analysis of the given geodetic measurements and geological studying of territory of Tereblja-Riksky derivational hydroelectric power station the geodynamic model of interaction of engineering constructions and the geological environment is created. Recommendations for carrying out of monitoring of geodynamic processes are offered.

Основи теорії тріщиностійкості залізобетонних елементів та конструкцій

In an article the calculation model of normal cracks formation is formed in the general theory of concrete and reinforced concrete elements and structures deformation. The method of determining of their step and the disclosure width depending on the stress-strain state is offered.

Geophysical methods for exploration and extraction of natural gas from shales

The definition of „shale gas” as a natural gas from shale and its general characteristics are considered. Based on analysis of the experience in the United States, the dependence of shale petrophysical properties on its potential gas-saturation was determined. Modeling of seismic effects, appearing after hydraulic fracturing, was performed. The possibility of using the geophysical methods in the search, exploration and production of natural gas from shale is substantiated, in the territory of Ukraine as well.