INFLUENCE OF PENETRATION DEPTH IN OUTBURST DANGER ZONE ON THE GAS-DYNAMIC PROCESSES NEAR TECTONIC DISPLACEMENT

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Collection of scientific papers «Geotekhnicheskaya Mekhanika» Issue 119

UDC 622.831.322:551.243:533.15

Authors:

Krukovskaya V.V., D.Sc. (Tech.), Senior Researcher

 (IGTM NAS of Ukraine)

Abstract. Analysis of geological conditions for the occurrence of sudden coal and gas outbursts in the central and other parts of Donbass shows that the majority of outbursts occurred in tectonically disturbed areas where the outburst is initiated by the penetration of a potential outburst danger zone. In order to determine the influence of the depth of penetration in the area of outburst on the development process of coal and methane outburst, a set of numerical experiments was executed. We used a mathematical model of coupled non-stationary processes of stress field change, filtering and methane desorption. It is shown that the geomechanical and filtration processes are moving from a quasi-stationary in a dynamic regime just inside the outburst danger zone. The coal permeability and methane filtration rate is sharply increasing, pressure of methane gradients take very high values. The curves of change of filtration parameters for different values of the penetration depth in outburst area at different times is demonstrated. It is shown that the wave of destruction advanced of a wave of pressure by 0.09 m to accept the simulation.

Keywords:

 coal and gas outburst, numerical simulation, tectonic displacement.

References:

1. Zabygaylo, V.Ye., Lukynov, V.V., Pymonenko, L.I. and Sakhnevych, N.V. (1994), Tektonica I gorno-geologicheskiye usloviya razrabotki ugolnikh mestorozhdeniy Donbassa [Tectonics and mine-geological terms of development of coal deposits of Donbassa ], Naukova dumka, Kiev, Ukraine.

2. Antsyferov, А.V. and Golubev, A.A. (2006), «New approach to the problem of the sudden troop landings», Coal of Ukraine, no. 5, pp. 34-37.

3. Doyle R. (2002), «Geological Structures in Relation to Outburst Events», Coal Operators' Conference: Materials of the International Conference. – Aziz: University of Wollongong & the Australasian Institute of Mining and Metallurgy, pp. 53-59.

4. Choi X. (2004), «Study of the Mechanisms of Coal and Gas Outbursts Using and New Numerical Modeling Approach»,Coal Operators' Conference: Materials of the International Conference. – Aziz: University of Wollongong & the Australasian Institute of Mining and Metallurgy, pp. 181-194.

5.  Zykov, V.S. (2006), Tekhnogennaya geodynamyka [Technogenical geodynamics], GU KuzGTU, Kemerovo, RU.

6. Pymonenko L.І., Yavnyy, P.M. and Melnigchuk, S.P. (2008), «Coal-and-gas outburst-danger and violation of basic working layers of Tyagljvsky and Lyubelsky deposits of Lvov-Volynsky basin on the foundation of techtonscal factor», Geotechnical mechanics, no. 80, pp.179-185.

7. Zharov, A.I., Krasyuk, N.N. and Remezov, A.V. (2006),FormirovaniyevybrosoopasnikhzonvugleporodnommassiveIsposobypredotvrashcheniyavybrosoopasnostinashakhtakh [Forming of coal-and-gas outburst-dangerous zones in an coal-rock array and methods of prevention of coal-and-gas outburst-danger on mine], Kuzbassvuzyzdat, Kemerovo, RU.

8. Nykolyn, V.I., Balynchenko, I.I. and Symonov, A.A. (1981), Borba s vnezapnimi vybrosami ugla I gaza v shakhtakh [Fight against the troop landings of coal and gas in mines], Nedra, Moscow, SU.

9. Lukynov, V.V., Krukovskyy, A.P. and Krukovskaya, V.V. (2007), «Design of process of the troop landing of coal and methane near the tectonic violations», Forum girnykiv-2007: Proc. of Int. Conf. – Dnipropetrovsk: National Mining University, pp. 63-69.

10. Vinogradov, V.V. (1989), Geomekhanika upravleniya sostoyaniyem massiva vblizi gornikh vyrabotok [Geomechanical of control by the state of array near the main warkings], Naukova dumka, Kiev, SU.

11. Triphonova, N.V. (1976), «About conformities to the law of change of gas-dynamical parameters of area of destruction in the process of the troop landing», // Outbursts of coal, breed and gas, Naukova dumka, pp. 60-64.

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), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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