SDA (self drilling anchor) Rock Bolting in tunnels

self drilling anchor rockbolts in tunneling works.

[@iainbrown9059]

use similar techniques in the mining industry 20 years ago

[@PrashantKumar-pw3dj]

SDA rock bolt
L-5 to 6 mt.
Dia-32mm
Bit-51mm
SDA is a combined system of rock bolt and drill road .
Tam rock machine pressure -max working pressure is 225 bar and rotation is 175 bar .
Grouting machine name -Atlas capco model 2015 .
Grouting machine max pressure is 40 bar .

[@travelpeace3301]

Are these SDA are hollow inside for grouting purpose?

[@mankibaat2.015]

What is the diffrence between SN and SDA and swellex rock bolt.. can you please explain

[@anthrabed]

I would appreciate the script. There are unclear words spoken after 1:07.

[@rohittamu8781]

Bhai hindi me banao is clip ko