National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
New trends in innovation of friction rock-bolts for mining conditions
Paloncy, L. ; Hanzlik, Č. ; Souček, Kamil ; Šňupárek, Richard
Combined friction and grouting bolts (hydraulic expanded) for using in coal seam are described. Results of experimental pull-out tests of two types of friction and grouting bolts of different length in a thick coal seam are presented. The results confirm high values of anchoring of the friction bolts in coal seam.

Interested in being notified about new results for this query?
Subscribe to the RSS feed.