| 摘要 |
FIELD: mining, particularly opened mining of horizontal and flat-lying seams. ^ SUBSTANCE: method involves cutting upper stripping ledge and rock interlayer ledges by shovel in mined-out space; mining mineral and conveying thereof. Covering stripping and rock interlayers are cut simultaneously with the use of single shovel located on lower rock interlayer roof. Upper stripping ledge is developed by upward digging operation, rock interlayers are developed by upward and downward digging operation performed during reverse shovel movement, wherein shovel moves along zigzag path and throws interlayer rock between ridges of banks. ^ EFFECT: increased efficiency of deposit development. ^ 2 dwg |
