Laboratory researches of filter-capacity parameters of coal with due account of phase-physical condition and stress-strain state
- 1 — Ph.D., Dr.Sci. professor National Mineral Resources University (Mining University)
- 2 — Ph.D. National Mineral Resources University (Mining University)
- 3 — post-graduate student, engineer National Mineral Resources University (Mining University)
Abstract
The Article contains the results of researches of dynamics in changes of physical and mechanical properties of enclosing sedimentary rocks and hard coals of the Kuzbass and Vorkutsk deposits. The general condition of change in permeability factor on gas was obtained, depending on forms and types of moisture bonds in rocks and intensity of stress state. In the research tasks necessary for solving the problem of methane extraction, the methodological aspects are a matter of interest to study the processes of sorption-desorption in natural gassaturated coals. Study of the sorption characteristics of coal has shown that its sorption capacity depends on the stage of metamorphism within the whole studied range of saturation pressures.
References
- Airuni A.T. Prediction and prevention of gas-dynamic phenomena at coal mines. Moscow, 1987. 300 p.
- Greg S., Sing K. Adsorption. Specific surface. Porosity. Moscow, 1970 . 406 p.
- Karmansky A.T. Regularities of changes in strength properties of rocks under complicated stress state , different le vels of moisture content and pore pressure // Proceedings Mining Institute. Saint Peterburg, 2009. Vol.183, P. 293-296.
- Karmansky A.T. Study of mechanism of methane desorption in coal saturation with carbon dioxide. Proceedings Mining Institute. Saint Peterburg, 2009. Vol.183, P.285-288.
- Karmansky A.T. Reservoir properties of rocks in change of stress state type. Proceedings Mining Institute. Saint Peterburg, 2009. Vol.183, P.289-292.
- Trubetskoy K.N., Guryanov V.V. Scientific research and methodological aspects of industrial extraction (production) of methane from coal seams// Ugol, 2005, N 11, Р.53- 56.
- Ettinger I.L., Shulman N.V., Bolshinsky M.I. On the reserve of free energy in gas-saturated coal seams // Ugol, 1980. N 7. Р.11-13.