FIELD: mining. SUBSTANCE: drilled from surface over contour of caved zone are holes through overhanging rock mass above cave and charged with explosives and blasted to loose and cave overhanging rocks within boundaries of displacement. Then, formed collapse funnel is filled with loose material and compacted. Holes are drilled from surface within cave-in boundaries and cased, with casing string perforated in its lower part, and rocks are consolidated by injection through casing cementing mixture from working floor up to level of artificial roof. Then, working is driven through consolidated rocks. EFFECT: higher safety of operation and reliable support of reconditioned mine workings.
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