FIELD: mining.
SUBSTANCE: proposed method comprises construction of drainage dam, erection of pulp duct, feed of backfill pump and drainage of water via drain openings in bulkheads mounted on the side opposite the pulp feed. Drainage pipes in soluble airtight shell are fitted in filled goaf. Cooled compressed air is fed to said pipes at the feed of filling pulp. Note here that dressing tails thickened to pasty state are used as a filling pulp.
EFFECT: shorter pulp dewatering interval, higher strength of backfill.
1 dwg
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