FIELD: mining industry. SUBSTANCE: according to method, sectional development workings are driven and seams are worked in by long stoping faces, recesses are made in sides of workings, recesses are filled with rock or quick-hardening material. Width of side recesses is taken as equal to depth of extension, around development workings, of zones with excess fissuring of rocks in immediate roof in periods of supporting them at boundary with worked-out space. EFFECT: high efficiency. 3 cl, 2 dwg
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