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Some features of the development and application of nitrogen-compressor stations in mines

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Category: Environmental safety, labour protection

Last Updated on 30 October 2015

Published on 30 October 2015

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Authors:

V.V. Loboda, Cand. Sci. (Tech.), Senior Research Fellow, OAO “M.M. Fedorov Research Institute of Mining Mechanics”, Head of the Turbomachinery Department, Donetsk, Ukraine.

O.V. Solovyev, OAO “M.M. Fedorov Research Institute of Mining Mechanics”, Researcher of the Laboratory of Heat-and-Power and Pneumatic Installations, Donetsk, Ukraine.

Abstract:

Purpose. Consideration of some aspects of scientific problems of development and application of technologies for underground production of nitrogen gas via underground modular nitrogen compressor stations to improve the technical performance of mining complexes and mine safety in coal mines.

Methodology. Computational studies on the use of nitrogen gas for inerting fire and explosion hazardous atmosphere of mined-out area and working area of the executive devices of mining machinery to safe concentrations.

Findings. We suggest an option of use of nitrogen gas in the process of coal mining by directly supplying it to the executive device of the mining machine for inerting explosive methane environment.

Originality. We have substantiated the necessity and feasibility of establishment of nitrogen-mobile compressor stations to generate nitrogen gas directly in underground mines and providing of its supply for inerting fire and explosion hazardous atmosphere in faces of mine workings during mining operations.

Practical value. The proposed technology of generation of nitrogen gas in underground conditions close to underground consumers can reduce the time spent on NCS deploy, reduce nitrogen losses during feeding by nitrogen surface compressor stations through gas-supply pipe, and perform inerting of fire and explosion hazardous medium directly in the faces of mine workings. This may increase the technical performance of mining machines and systems and in combination will improve the safety of mining.

References:

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Alekseyev, A.D., Kovryha, N.N., Pasternak, Z.G., Starykov G.P. and Ulyanova, Ye.V. (2003), “Fixed methane in natural coals”, Sb. Fiziko-tekhnicheskiye problemy gornogo proizvodstva. IFHP NANU, Donetsk, no.6, pp. 8.

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Alekseyev, A.D., Grinev, V.G. and Starikov G.P. (2009), “Previous studies of various forms of presence and amount of methane in the coal-bearing column”, International Scientific and Practical Conference “Extraction and use of methane gas: attracting investment”, Donetsk, Ukraine, September 18, 2009.

3. Алексеев А.Д., Стариков Г.П., Филипов А.Э. Численное моделирование выхода метана из угля с учетом волны разгрузки и раскрытия пористости при изменении напряжений. Проблемы горного давления. // Сб. научных трудов ДонНТУ, №3, Донецк, 2003г., 30-31с.

Alekseyev, A.D., Starikov G.P. and Filipov А.Е. (2003), “Numerical simulation of methane from coal in view of the unloading wave and disclosure porosity changing voltages. Rock pressure problems”, Sb. nauchnykh trudov DonNTU, Donetsk, no.3, pp. 30.

4. Патент №34114 Україна. МПК⁷ E21F5/00, А62С3/02. Спосіб підвищення безпеки та ефективності процесу руйнування гірничого масиву комбайном і бурильною установкою / Б.А. Грядущий, А.М. Коваль, В.В. Лобода, Г.В. Кірік, П.Є. Жарков, О.М. Лаврінко, С.Г. Лісовий; Заявитель и патентодержатель ОАО „Научно-исследовательский институт горной механики им. М.М. Федорова“. – Заявка № 20080352; Заявл. 19.03.2008; Опубл. 25.07.2008, Бюл. № 14.

Hriadushchyi, B.А., Koval, А.M., Loboda, V.V., Kіrіk, H.V., Zharkov, P.Ye., Lavrіnko, O.M. and Lіsovyi, S.G. Pat.34114 Ukraine MPK⁷ F04C29/04, B08B3/10, F04C28/00. Method of improvement of the safety and efficiency of the rock massif destruction by combine and drilling machine. Patent OAO “M.M. Fedorov Research Institute of Mining Mechanics”, no.200803521; declared on March 19, 2008; published on July 25, 2008, bulletin no.14.

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