Abstract
The article describes the complex technology of coal methane recovery, which involves underground coal gasification of lower beds in series of gas-rich strata liable to rock-bumps, coal based methane recovery and mechanized coal mining. Geodynamic zoning is used for selection of places for well drilling. The application of the suggested technology enables to solve a range of tasks, such as
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unloading of workable beds and reduction of their rock-bump hazard due to protective seam burnout;
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increase of workable beds degasification due to unloading;
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increase of workable bed methane desorption rate due to conductive and partly convectional heat transfer through interbeds;
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reduction of workable bed coal strength and rock-bump hazard by passing-through combustion gases (CO and especially CO2);
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degasification of coal bearing layers and sublayers of interbeds due to their partial burnout during gasification and accelerated degassing during intensive heating;
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increase of gasification products heat value due to their diluting with methane recovered from upper beds degasification;
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reduction of methane outburst to the atmosphere, which has greater greenhouse effect in comparison to carbon dioxide.
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Nikolaevich, S.A., Vadimovich, T.S., Vladimirovich, G.E. (2016). Complex Technology of Underground Coal Gasification and Coal-Based Methane Recovery Using Geodynamic Zoning. In: Litvinenko, V. (eds) XVIII International Coal Preparation Congress. Springer, Cham. https://doi.org/10.1007/978-3-319-40943-6_77
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DOI: https://doi.org/10.1007/978-3-319-40943-6_77
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