METHOD FOR DEEP BOLT INSTALLATION Russian patent published in 2007 - IPC E21D20/00 

FIELD: mining, particularly mine lining with deep bolts.

SUBSTANCE: method involves drilling borehole; inserting necessary number of ampoules filled with chemical hardening mix in the borehole; inserting sharpened bolt end having length exceeding mine height in borehole and leaving another end in mine ground; locking bolt rod and support washer thereof with the use of sharpened metal bar having length equal to telescopic perforator advancing travel; moving the lock to borehole head by force applied thereto by telescopic perforator; repeating said movement operation to provide perforator connection with bolt head to rotate bolt for ampoule breaking and mixing; retaining bolt in borehole up to total mix polymerization. Borehole drilling and anchor installation are carried out with the use the same telescopic perforator.

EFFECT: increased reliability, decreased costs and time for bolt installation, simplified works due to possibility of integral bolt installation mechanization with the use of device for bolt forcing in borehole.

4 cl, 2 dwg