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Information × Registration Number 0215U002231, 0112U000493 , R & D reports Title Physical and chemical mechanics of the geotechnical systems: authentication of parameters and management popup.stage_title Head Blyuss Boris Oleksandrovich, Registration Date 02-03-2015 Organization Institute of Geotechnical mechanics of NAS of Ukraine popup.description2 The algorithm of calculation of parameters of massif state control under hydrodynamic influence is elaborated. This algorithm takes into account porosity, filtration coefficient, fluid viscosity and parameters of hydrodynamic influence (fluid delivery regime, time of action, pressure releasing regime). By the use of simulation the analytical method of calculation of hydrodynamic parameters of cavitational autooscillations is improved and dynamic characteristics of periodically-stalling fluid flow in the borehole simulator are investigated. The system model is elaborated for atom-molecular transformation in black coal organic material giving rise to coal methane generation. The presence of two independent components of gas content is the basis of this model and this allows estimation not only of volume of gas holding in the bed at the moment, but also of the quantity of coal organic material that potentially can generate methane. The regularities of interaction of parameters that have an influence upon massif are established for uniform, nonuniform and porous media. It is shown that pressure gradient with fluid discharge, medium permeability and effective viscosity as well as fluid discharge with medium permeability have an influence upon each other to a greatest extent. The dependences for these parameters are determined. Combination and correlation of complementary parameters of massif state control for different media allow calculation of action intervals for dominant characteristics. The intervals of dominant parameters variation during massif physicochemical processing by different media are determined. The dominant parameters are concentration of reagents in injected solution, time and pressure of injection, time of change of phase states during solution action and degree of fill of coal crumbling-porous structure by solution. During research of physicomechanical processes in basaltic massif it is first established that jointing distribution and blockiness nature along the massif bench may be approximated by cubic polynomial. The linear approximation of size grade distribution is obtained for ordinary tuff and for tuff weakened by water spraying during crushing in roll crusher. These dependences allow prognostication of increase ratio of rock crushing factors. The dependence of discharge characteristics of ring ejector of pneumatic transport pipeline system on rock elementary mass discharge is first obtained for typical changing intervals of ejecting flow energy dispersion coefficient and pressurized air elementary mass discharge. The parameters of rock transporting by vibropneumatic transport pipeline systems with ring ejector, which determine discharge, technological and ejection characteristics of this class equipment for different ratios of areas of transporting pipeline and ejector annular slot, are identified. As a result of investigation of influence of electrolyte physicochemical properties on zeta-potential of rocks the occurrence of flow potential is established. Electroviscous effect retards fluid filtration. The value of electroviscous retardation of filtration increases with increasing of pressure gradient and electrolyte dielectric permittivity. It is first established that dependence of effective viscosity on initial shear stress for structured coal suspensions is described by exponential function with positive power exponent independently on rank of coal, particle-size distribution of solid phase, fluid properties and using reagents. This allows simplification of well-known methods of calculation of parameters and flow regimes of structured suspensions as well as introduction of new, more precise methods of determination of their rheological characteristics. As a result of statistical data manipulation of experimental research of rheological characteristics of structured suspensions it is first established for geotechnological systems that values of effective viscosity and initial shear stress are determined by ratio of content of particles with the size less and more than 0,08 mm in the solid phase. At that the dependence of suspension effective viscosity on this ratio is described by exponential function with positive power exponent in the whole concentration interval. Product Description popup.authors Безручко К.А. Булат А.Ф. Васильєв Л.М. Волошин О.І. Дзюба С.В. Кирия Р.В. Надутий В.П. Семененко Є.В. Софійський К.К. Четверик М.С. Шматовський Л.Д. popup.nrat_date 2020-04-02 Close