FIELD: mining industry, possible use during underground extraction of powerful steep formations, mainly, coal ones.
SUBSTANCE: method includes extraction of bed in strips and filling of extracted space with filler. First strip is extracted along bed rise by hydraulic method, after extraction rising mines are left unfilled for extraction of adjacent strip, which is performed by shield machine along bed fall, and during extraction in mounting niche on ventilation level a chamber is built, wherein hardening backfill is injected. In backfill massif furnaces are left for feeding self-pouring backfill into extracted space of strip, extraction of next strip along bed fall is performed by shield machine and its extracted space is filled with hardening backfill, while self-pouring transportation of rock mass is performed. Ventilation of faces is performed due to common mine depression.
EFFECT: increased productiveness of labor and decreased laboriousness of mining operations.
5 dwg
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