FIELD: mining.
SUBSTANCE: method for sealing degassing wells comprises performing oriented hydraulic fracturing of rocks, creating air-impermeable screens in surrounding array, creating rock layer preventing air filtration into the working part of the degassing well. The rock layer preventing air filtration into the working part of the degassing well is formed between two parallel air-impermeable screens due to impregnation of rocks with liquid with formation pressure higher than air pressure in the mine working.
EFFECT: reduced air inflow from the mine working into the working part of degassing well through coal-rock mass.
10 cl, 1 dwg
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Authors
Dates
2018-01-18—Published
2016-12-01—Filed