| 摘要 |
FIELD: mining. ^ SUBSTANCE: method for development of contiguous coal seams series includes downstream seams development, arrangement of development openings along overworked seam, strengthening of development openings and development of seams through long breakage faces. Area of higher overburden pressure zone location is identified in overworked seam, together with stress values in sections of massif along route of development opening arrangement that are located in zone of higher rock pressure. Depth of higher crack intensity area propagation in development opening roof rocks is identified for each section. Development openings are fixed by bolting, length of bolts is accepted as higher than depth of higher crack intensity area propagation in roof rocks. Development openings of overworked seam pass after completion of the second working related to formation of unworked coal edge parts and pillars along upper bed. With encapsulated fixation of bolts length of blasthole is determined using specified expression. ^ EFFECT: reduced costs for maintenance and enhancement of reliability in functioning of overworked seam development openings arranged in zones of higher overburden pressure. ^ 2 cl, 2 dwg |
