Sheyko A.V. The improved empirical and naturalistic methods for forecasting methane content in the coal seams

Details

Parent Category: Geo-Technical Mechanics, 2018

Category: Geo-Technical Mechanics, 2018, Issue 141

Geoteh. meh. 2018, 141, 143-150

https://doi.org/10.15407/geotm2018.141.143

THE IMPROVED EMPIRICAL AND NATURALISTIC METHODS FOR FORECASTING METHANE CONTENT IN THE COAL SEAMS

¹Sheyko A.V.

¹Institute of Geotechnical Mechanics named by N. Polyakov of National Academy of Sciences of Ukraine

UDC 622.411.332.001.18:533.17

Language: English

Annotation.

The problem of determining methane content in the coal seams was being solved actively in the 1960s-1980s since there was a need to improve design reliability of gas safety systems in the mines. Today, mine methane is considered as a nonconventional material in the energy industry and in terms of improving safety, environmental friendliness and technical and economic efficiency of the operating mines. Hence, solving the problems of reliable determination of methane content in coal deposits has become topical again. The research is related to the field of the mine gas safety and assessment of methane reserves in the methane-coal deposits. A scope of literature and stock data were summarized, and empirical methods for determining methane content in coalbeds were improved (statistical geological, mining statistical and semi empirical methods). Impact of tectonic structures of coal deposits on the methane relative content was determined. Pattern of depth effect on methane content in the coal seams was established. The mining statistical method for forecasting gas emissions was improved by taking into considerartion effect of depth, rock inclination, seam thickness and methods for controlling rock pressure on the gas emissions from the coal seam. The quantitative estimation of methane share emitted from the mine rocks in the total gas balance of the mining site was done. The semi-empirical method for predicting methane content in coal seams was improved by taking into account the Hilt-Skok’s law and the established patterns of the effect of unloading, depth and strength of rocks on thermobaric conditions, which predefine gas content in the coal seams. The research results were implemented in the projects of Dneprogiproshakht Institute. The evidence-based part of the improved methods were presentred in different scientific reports of the N.Polyakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine  and Dniprogiproshakht Institute.

Keywords: empiric-statistical methods, proognosis, methane content, coal seam, gas emission from the coal seams.

References

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About the author

Sheyko Anatoliy Vasilyovych, Master of Science, Chief Technologist in Department of Underground Coal Mining, Institute of Geotechnical Mechanics named by N. Polyakov of National Academy of Sciences of Ukraine, (IGTM NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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