GAS-SATURATION REDUCTION IN THE FLAT COAL SEAM i31 BY APPLYING HYDRODYNAMIC IMPACT

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Parent Category: Geo-Technical Mechanics, 2013

Category: Geo-Technical Mechanics, 2013, Issue 110

UDC [622.411.332:533.17]:622.33

Sofiiskyi K.K., D.Sc. (Tech.), Professor (IGTM NAS of Ukraine)

Gavrylov V.I., Ph.D. (Tech.), Senior Researcher (IGTM NAS of Ukraine)

Vlasenko V.V. (IGTM NAS of Ukraine)

Abstract. Object of the research: processes in the rock massif induced by hydrodynamic impact in the holes drilled from preparatory roadways through the roof rocks into the coal seam. Purpose of the research: to estimateeffectiveness of hydrodynamic impact on the gas-saturated coal seam i₃¹ performed through the underground holes with the aim to intensify degassing processes. Subject of the research: parameters for method of hydrodynamic impact on the stressed gas-saturated flat coal seam. Methods of the research: experiments in the mine; statistical processing of data. Mine experiments on intensifying degassing of the coal seam i₃¹ in the 24th east sloping longwall of the Sukhodolskaya East Mine with the help of hydrodynamic impact shown that gas release from the flat seam is uneven, with bursts on the 40th day and 60th day, and depends on distance between the boreholes and longwall. The authors specified parameters for the hydrodynamic impact on the flat prone-to-outburst seam allowing to reduce the seam gas saturation by 30%.

Keywords: preparatory working, technological boreholes hydrodynamic impact, gas emission, degassing.

References:

1. Voloshin, N.E. and Boyko Ya.N. (2004), “Change of outburst coal seams with depth development”, Ugol Ukrainy [Coal of Ukraine],vol.6, pp. 40 – 42.

2. Guselnikov, L.M., Osipov, A.N. and Ganshevskiy, S.P. (2000), “Perfection of methods activation gas release during the degassing of coal seams”, Gornyu informatsionno-analiticheskiy byulleten [Mining information-analytical bulletin], vol. 2, pp. 93-95.

3. Puchkov, L.A. and Slastunov, S.V. (2006) “Effective solution is of methane safety of coal mines in Russia - an urgent task today”, Ugol [Coal], vol. 12, pp. 24-28.

4. Gavrylov, V.Y., Vlasenko, V.V. and Pishchev, A.V. (2011), “Reduction of gas saturation and the outburst of coal seams in overhead longwalls of variable sign impact”, Vibracii v tekhnitsi ta tekhnologiiakh, vol. 4(64), pp. 94-96.

5. Zhitlenok, D.M., Sofiiskyi, K.K., Sylin, D.P., Gavrylov, V.Y., Moskovskyi, O.V., Petukh, O.P. and Vlasenko, V.V. (2013), “The methods the degassing steep coal seams of the Central District of Donbass”, Impulsnye protsessy v mekhanike sploshnykh sred [Impulse processes in continuum mechanics], Proc. 10th Int. scientific conference “Impulse processes in continuum mechanics”, 19-22 Augusts 2013, Nikolaev, Ukraine, pp. 165-170.

About the authors:

Sofiiskyi Konstantin Konstantinovich, Doctor of Technical Sciences, Professor, Head of Department of Undeground Coal Mining Technology, M.S. Poliakov Institute of Geotechnical Mechanics under The National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnepropetrovsk, Ukraine, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. .

Gavrylov Vyacheslav Ivanovych, Candidate of Tachnical Sciences, Senior Researcher, Senior Researcher of Department of Undeground Coal Mining Technology, M.S. Poliakov Institute of Geotechnical Mechanics under The National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnepropetrovsk, Ukraine, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. .

Vlasenko Vasyl Victorovych, Doctoral Student, Engineer 1st category of Department of Undeground Coal Mining Technology, M.S. Poliakov Institute of Geotechnical Mechanics under The National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnepropetrovsk, Ukraine, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

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