Krukovskaya V.V. mathematical simulation of interconnected geomechanical and filtration processes while realizing measures on outburst prevention

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Parent Category: Geo-Technical Mechanics, 2016

Category: Geo-Technical Mechanics, 2016, Issue 129

Geoteh. meh. 2016, 129, 20-30

MATHEMATICAL SIMULATION OF INTERCONNECTED GEOMECHANICAL AND FILTRATION PROCESSES WHILE REALIZING MEASURES ON OUTBURST PREVENTION

¹Krukovskaya V.V.

¹IGTM NAS of Ukraine

UDC 622.831.322

Abstract. Gasdynamic processes in coal rock mass is closely related to technological factors. Knowing of gas-dynamic process dynamics at various technological actions is of great importance for scientific substantiation of parameters for various methods of preventing these processes and for improving the coal mining efficiency and safety.  A mathematical model «changes in the stress-strain state of coal rock massif – nonstationary methane filtration – methane desorption» was developed in order to simulate unloading slots, ad-vance bores, overworked and underworked coal seams, and to study effect of drifting rate on occur-rence of gas-dynamic phenomena. Further, a mathematical model «changes in the stress-strain state of the coal-rock massif – nonstationary two-phase filtration of liquid and methane – methane de-sorption» was developed in order to simulate rate of damping and impact of hydraulic actions on the coal seam. Further, a mathematical model «changes in the stress-strain state of coal rock massif – nonstationary methane filtration – methane desorption – explosive impact» was developed in order to simulate the coal-seam and the seam roof rocks shooting, rate of roadway driving and dynamics of explosion. Algorithms for solving these interconnected problems were also developed. The nov-elty of this approach lays in opportunity to study several natural and technological processes and, at the same time, to take into account their mutual influence.

Keywords: coupled process simulation, gas-dynamic phenomena, methods of gas-dynamic phenomena preventing.

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About the authors:

Krukovskaya Victoriya Victorovna, Doctor of Technical Sciences (D. Sc.), Senior Researcher, Senior Researcher in Department of Control of Dynamic Demonstrations of Rock Pressure, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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