FIELD: mining. SUBSTANCE: method includes dividing level into sublevels, driving sublevels with alternating strips. Sublevels are prepared by digging horizontal strips at boundaries of adjacent sublevels with solidifying backfill, driving and forming sublevel drifts over and below horizontal strip in each sublevel. Coal digging in primary strips is carried out from sublevel drifts formed above horizontal strip. The secondary strips are worked from lower drift through connections left in backfill block of the horizontal strip. Hydraulic backfill is used to fill worked space in the second chambers. EFFECT: higher productivity. 3 dwg
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