FIELD: mining. SUBSTANCE: method for erection of ceiling of underground structure includes diving of through opening along the axis of design contour of ceiling, and blind drifts square to through opening. Blind drifts are driven at distance from one another multiple to their width and filled with cementing mortar. After hardening of mortar, adjacent blind drifts are driven and filled with cementing mortar. When blind drifts are filled, through opening is filled. EFFECT: higher efficiency. 3 dwg
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Authors
Dates
1995-03-10—Published
1990-12-04—Filed