FIELD: mining. SUBSTANCE: after extraction of rock mass with formation of leading hollow drilled along axis of working are blast holes to install anchors in them. Blast holes for anchors are drilled in roof of leading hollow in points of conjugation of hollow with its vertical walls. Leading hollow is made through full working height with cross-section less-than design cross-section of working. In so doing hollow length is taken equal to advance value of breakage face for one cycle. After installation of anchors into blast holes in roof of leading hollow, working cross-section is worked up to design value. Then, permanent frame support is erected with lagging behind breakage face by distance L under protection of anchors. Distance L is selected depending on carrying ability of anchored roof of driven working. EFFECT: increased stability of weak unstable rocks enclosing the working within the design cross-section up to erection of permanent frame support. 3 dwg
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