Abstract
A correlation between the structure of the organic matter of coal and the ability of coal to release gases upon thermal and mechanical actions was considered. It was found that coal-bed methane released in different modes (regular and sudden) during coal-bed mining is of mechanochemical rather than sorption nature. Relationships were proposed to determine the natural methane content of coals and the sorption capacity of coals from a metamorphic series for methane using a structure-chemical parameter: the concentration of paramagnetic centers calculated from a broad line of the EPR signal. The use of spectroscopic techniques provides an opportunity to considerably simplify and make cheaper a very labor intensive technology for the determination of natural gas content. The regulations of methane safety in coal mines should be corrected based on the original concepts of the nature of coal-bed methane.
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