Self drilling rock anchor has two performances

Self drilling rock anchor  has two performances
Self drilling rock anchor has two performances: drilling and grouting. It features a hollow bore for flushing, or simultaneous drilling and grouting. It can be installed in sites with weak rocks, loose soil, weathered layer, sand with stone layer where it is so difficult to create a hole in complex formation. The unconsolidated ground conditions favor the self drilling anchor bolt technique for fast and simple method of installed compared to the traditional method, which was confirmed by the application in Vertical Shaft at Left Bank of Xiluodu Hydropower Station.
High-stainless self drilling rock anchor , is used for the condition of the civil construction influence by the underwater,seawater and chemical mediums. The stainless anchor bolt has not only the beautiful surface, but also the good anti-corrosion property.
Expansion shell anchor bolt is to put the hollow bar into rock hole, rotate the hollow bar until the expansion shell fully expanded and make friction resistance between the expansion shell and drill hole. Pressuring the plate and nut to make expansion shell hollow grouting bar from a rapid anchoring force pressure.
Tubular bolt is a wholly anchor bolt, it can reinforce the rock, and it can increase the contact area of the steel tube and the rock layer, which has the larger pulling-out force than other common anchor bolts.