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Information × Registration Number 0214U003967, 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 24-03-2014 Organization Institute of Geotechnical mechanics of NAS of Ukraine popup.description2 The nomogram, which allows determination of radius of the unloaded zone depending on properties of gas-saturated coal bed, is developed. The analysis of the ways of liquid infusion into coal bed for the purpose of its water jet and the reasons of loss of efficiency of water jet in the conditions of big depths is made. It is established that hydroimpulsive attack in a mode of periodical breaking cavitation is the least power-consuming and cost-based as well as the most perspective in the field researches. Theoretical substantiation of the phenomenon of periodical breaking cavitation as a source of a pulse flow of liquid in filtration part of a technological borehole and substantiation of parameters of technical means for hydroimpulsive jet of coal beds is made. The regularities of change of natural gas content of coal beds owing to influence of thermobaric conditions are established. The level of influence of regional factors (of coal rank and the depth of occurrence) on the content of gas in coal beds of the Krasnoarmeysk geological industrial region of Donbass is determined. Geomechanical and geothermal influence on structural transformations of coal substance is determined. The analysis of existing models of effect on gas-saturated porous massif by jetting of water and chemical solutions is accomplished as well as mathematical simulation of such process is carried out. The simulation of processes of cracks formation in various liquid-filled rocks is carried out in laboratory environment. The results of simulation of processes running when jetting of various media into a gas-saturated porous massif are generalized. The regularities of particle size distribution of characteristics of copper yield, content and recovery in crushed mass of lava-breccia are experimentally determined. Mathematical models are developed and parabolic dependences of rock yield and of copper cumulative yield on crushing size are obtained. The analysis of mining conditions at iron-ore quarries of Krivbass is accomplished during the work and the main directions of its raw materials base development are picked out. Influence of mining and geological parameters of coal production on difficulties of contact zones execution is analyzed. Researches of properties of reaming grouting mortar and stone depending on their composition and on a type of filler are carried out. Free linear expansion and self-tension of hardening grouting mortar is investigated, deformation and strength characteristics as well as coefficient of cohesion of grouting stone with rock are determined. Reliability characteristics of stands and drives of band conveyors of coal mines are determined. Mathematical models of functioning of conveyor transport system of coal mines, which take into account its self-similar structure, are developed. The analysis of features of processes of rock transportation by vibropneumotransport systems with the ring ejector and mixing of flows of air fuel mixture in the ejector device is made. The main regularities of material particles movement under the influence of vibroaerodynamic forces are determined taking into account air ejection from the atmosphere, energy losses for air streams mixing in the ejector device and the generalized coefficient of movement resistance. The models of processes of preparation of structured suspensions with necessary for geotechnological systems rheological characteristics are created. The analysis of existing models of liquid filtration processes in crumbling porous media for development of mathematical models of liquid flow in pore space of rocks is carried out. The model of liquid filtration processes in pore space taking into account influence of medium heterogeneity and change of anisotropic massif deflected mode is developed. Product Description popup.authors Безручко К.А. Булат А.Ф. Васильєв Л.М. Волошин О.І. Дзюба С.В. Максютенко В.Ю. Надутий В.П. Семененко Є.В. Софійський К.К. Четверик М.С. Шматовський Л.Д. popup.nrat_date 2020-04-02 Close