VOZMOZHNOSTI POVYSHENIYA EFFEKTIVNOSTI UPRAVLENIYA GAZOVYDELENIYEM NA VYYEMOCHNOM UCHASTKE [OPPORTUNITIES TO INCREASE GAS EMISSION CONTROL EFFICIENCY AT THE EXTRACTION SECTION]
The development of coal deposits is always accompanied by various types of gas manifestations: from quasistatic (methane-inflow of coal mines and sections) to dynamic (with increased gas emission, up to sudden outbursts of coal and gas). These phenomena parameters forecast accuracy depends on the st...
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| Format: | Article |
| Language: | English |
| Published: |
"VostECO" Ltd
2017-09-01
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| Series: | Vestnik Naučnogo Centra po Bezopasnosti Rabot v Ugolʹnoj Promyšlennosti |
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| Online Access: | https://ind-saf.com/uploads/s/l/d/a/ldab4xgicwcd/file/efyLUGjS.pdf |
| Summary: | The development of coal deposits is always accompanied by various types of gas manifestations: from quasistatic (methane-inflow of coal mines and sections) to dynamic (with increased gas emission, up to sudden outbursts of coal and gas). These phenomena parameters forecast accuracy depends on the study degree of geomechanical and gas-kinetic processes occurring in the massif intense technological disturbances zones. The level of scientific knowledge about the regularities of gas emission dynamics in these conditions determines the gas emission effective control problem solution level. In the article some possible task solutions are shown. On the example of an exact extraction section geological and technological specific features of an inclined seam working with long pillars along the strike are revealed. The results are presented on the design decisions updating to improve the extraction section gas control efficiency. A scheme is proposed for drilling the counter degassing boreholes from the mine opening to the adjacent seams, the lengths of the boreholes, the direction angles and the frequency of drilling are calculated. Usage of such a scheme will help to reduce gas emission from the adjacent underworked seams at the period of the rock pressure relief and that will cause methane inflow reduction into the very zone of air gas exchange “coal face - gob area”. |
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| ISSN: | 2072-6554 2072-6554 |