FIELD: mining, particularly bolting and injection consolidation of block-structured fissured rock massif.
SUBSTANCE: method involves drilling wells; installing and securing injection bolts with support heads by means of powder mineral filler; applying insulating load-bearing covering on mine surface; serially injecting cementation grout through perforated part of injection bolts in rock massif vial wells along with diverting filtered liquid phase; performing injection bolt pre-stressing; fixing support head sliding along axis on load-bearing rod at intensive massif fissuring zone level; securing each injection bolt in well head section upstream of intensive massif fissuring zone. Cementing grout is injected through perforated part of injection bolts, which is arranged after support head. Filtered liquid cementing grout phase is diverted through consolidation powder mineral filler arranged in well head sections.
EFFECT: increased efficiency of rock consolidation.
2 cl, 4 dwg
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