Very Nice video.....cleared my many of the doubts...and incresed my visualisation....pls provide more and more such videos for underground coal and metal mining...
No man, it's not grouted. It is a simple steel bolt that is expanded with compressed air or hydraullic pressure. The pull-out resistence is purely frictional between the bolt and the rock. It is a good, quick and cheap technology, very used in mines. But if you need high capacity bolts it is better to use fully grouted bolts; of course you have to be very careful in the grout mix, but of sure you know better than me the right grouting mix.
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Used to clean an Atlas Copco compressor assembly plant at Holyoke, MA years ago.
It is so beautiful down there, and the rockbolts decorate the ceiling so beautifully. I could walk for days in those drifts.
Very Nice video.....cleared my many of the doubts...and incresed my visualisation....pls provide more and more such videos for underground coal and metal mining...
The guy at 3:00 sure is excited about those rock bolts
1:15 don't forget the hot dogs
Dude is happppppy about those bolts.
Gorgeous 😍
ive watched this like 10 times and something's built different in this one
Rick seems to be 1st class..
Lol so funny! nevertheless, so useful for worker´s safety.
this guy is so funny -))
until a rock bolt falls on his head.
Is this grouting?
No man, it's not grouted. It is a simple steel bolt that is expanded with compressed air or hydraullic pressure. The pull-out resistence is purely frictional between the bolt and the rock. It is a good, quick and cheap technology, very used in mines. But if you need high capacity bolts it is better to use fully grouted bolts; of course you have to be very careful in the grout mix, but of sure you know better than me the right grouting mix.
we can supply polyester resin anchors from? China with good quality
Shit where is the explaination