Method for installing rock bolts

Details Method for installing rock bolts Method for installing rock bolts

E - Fixed Constructions

21

D

61/47

E21D 20/00 (2006.01) E21D 20/02 (2006.01)

Patent

CA 1335937

A pipe bolt having a central bore is inserted into a hole formed in an underground excavation. A high density grout is injected into the central bore of the pipe bolt to cause the high density grout to travel through the bore, out of the pipe bolt and past the sides of the bolt filling the space between the bolt and the hole. The high density grout allows for improved bonding strength concomitant with reduced porosity.

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