Self drilling anchor system – Good helper for tunnel construction
Self drilling anchor system is today’s demand of the increasing of the tunneling industry and ground engineering for safer and faster production. Self drilling anchor bolt system combines drilling, grouting and anchoring together. It ensures the anchoring effect in complex ground conditions. It is safe, reliable and efficient.
Self drilling anchor system is a hollow bolt, which itself doubles as a drill pipe and the pipe for grouting. Before Grouting pipe can be used for blowing dust, which excludes formation of rock dust, the slurry through the hollow bolt grouting ejected from the drill can fill cracks around the borehole and formation, so that the bolt with the surrounding soil solidified together, forming steel-concrete pillars, play a role in strengthening.
Self drilling anchor system as an effective system of anchorage has been widely used in tunnel pre-support, radial support, reinforcement, as well as tunnel disease treatment works. And the use of self drilling anchor system has brought a lot of good economic and social benefits.