FIELD: mining. SUBSTANCE: method for mining of contiguous gently dipping beds includes sealing of floor of upper bed in airway and strengthening of side mass on the strike ahead of longwall of underlying bed in conveyer drift. Established on the basis of investigation and calculation are depth of floor sealing and strengthening of side mass depending on thickness of interbeds. EFFECT: higher efficiency. 3 cl, 7 dwg
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Authors
Dates
1995-07-09—Published
1992-03-20—Filed