FIELD: mining industry. SUBSTANCE: according to method, initially constructed is advance support in the form of slot cut over contour of working face and filled with concrete mix. Then, permanent lining is made under protection of aforesaid support, and working face is driven forward. Slot of preset parameters is cut by sectors, alternately at each side of central rock pillar. Slot is cut in rock pillar and is concreted, then advance support is built and permanent lining is constructed under its protection. EFFECT: high efficiency. 1 dwg
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Authors
Dates
1997-11-20—Published
1996-01-23—Filed