SUPPORT FOR DEVELOPMENT WORKINGS

摘要

FIELD: mining industry. SUBSTANCE: this can be used in underground workings driven through mineral strata and mineral-containing ground. Roof beam of support is made of special profile section or other kind of rolled stock. Roof beam is supported by one prop at point located at one third of its length and by upper end of cantilever installed between prop and roof beam. Second point of roof beam support is located at one third of its length as counted from other end. In longitudinal direction of underground working, roof beams create integral support system with use of special connections. Aforesaid embodiment of mine support is featured by reduced materials needed for manufacture and low labour-intensity in manufacture, mounting and transportation of mine support. EFFECT: higher efficiency. 3 dwgh