INTENSIFICATION DEGASSING SHALLOW COAL SEAM i31 OF HYDRODYNAMIC IMPACT

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Parent Category: Geo-Technical Mechanics, 2013

Category: Geo-Technical Mechanics, 2013, Issue 111

UDC 622.831.322:622.831.325

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. The object of research – the processes that take place in rock massif, the hydrodynamic impact on it through bores drilled through the development workings of rocks soil or roof on the coal seam. The purpose of this paper is in assessing the effectiveness of hydrodynamic impact on gas-saturated coal seam i₃¹ through underground wells to intensify its degassing. The subject of research - the parameters of the method of hydrodynamic impact on strained gas-saturated gently sloping coal seam. Methods of researches - an experiment in mine, statistical processing of data. Mine experimental works on intensification degassing seam i₃¹ 23 east sloping longwall mine "Sukhodolskaya East" hydrodynamic impact showed that the outgassing of a gently sloping reservoir has peaked character with a maximum at 60-100 day. Degassing out of degasification and technological boreholes depends significantly on the distance from the longwall: minimum falls on the 100 meters or more, the maximum - 30-40 m. To receive zone coal seam with coefficient of degassing not less than 0,3 to produce a hydrodynamic impact not later than 6 months prior approach the longwall to the boreholes.

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

References:

1. Martovitskiy, V.D. (2004), “Perfection of charts of ventilation and methods of degassing is an effective way of increase of safety”, Coal of Ukraine, vol. 3,  pp. 23-24.

2. Gavrylov, V.Y., Krivoruchko, E.N., Vlasenko, V.V. and Volkov, V.V. (2010), “Management of gas-dynamic processes at working off steep outburst seams by hydrodynamic impact through underground borehole”, Geotekhnicheskaya Mekhanika [Geo-Technical Mechanics], no. 90, pp. 45-49.

3. Balov, S.V. and Gataulin, N.N. (2004), “Degassing as a way to increase the burden on the working face”, Coal of Ukraine, vol. 12, pp. 30-31.

4. Sofiiskyi, K.K. (1998), “Hydrodynamic impact - the main direction of development of unconventional methods of mining coal and gas, prevent sudden release and degassing of coal seams”, Geotekhnicheskaya Mekhanika [Geo-Technical Mechanics], no. 10, pp. 179-183.

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About the authors:

Sofiiskyi Konstantin Konstantinovich, Doctor of Technical Sciences (D.Sc.), 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 Technical Sciences (Ph.D.), 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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