Self drilling anchor bolts are short, low capacity reinforcement, comprising a bar fixed into the rock and, if required, tensioned to a predetermined load. The self drilling anchor bolt consists of a drill bit attached to a hollow steel tendon, which is drilled, installed and grouted at the same time, allowing ground improvement, increased productivity and economics.

Self drilling anchor bolts are commonly used throughout the civil engineering and tunneling industries. They are used to improve the stability and load bearing characteristics of a rock mass.

Within the civil engineering industry, Self drilling anchor bolts are used for fixing rock netting, slope stabilization, stanchion bases and rock fences. Self drilling anchor bolts are also used in structural repairs on retaining walls, bridge spandrel walls and tunnels.

In the tunneling industry, self drilling anchor bolts are used for horizontal fore-poling, slope stabilization at the tunnel portal and for anchoring large section tunnels with high side walls.

The advantages