It is complicated in construction geology for the tunneling,so we should support tunnel with self drilling anchor bolt, self drilling
anchor bolt support is currently the most widely used method for high grade highway& tunnelling, also it is the core of the process.
Self drilling anchor is a construction element that is used to actively apply tensile forces to structures.Self drilling anchors can be
used on new construction or to remediate an existing structure.Self drilling anchors can be constructed out of strands of cable or
reinforcing bar grouted into the rock face.Self drilling anchors can also utilize a wedge or expanding base to provide an additional
mechanical connection to transfer loads into the underlying rock.
Self drilling anchor can be used in construction foundation ditch, instead of underground continuous wall and row piles. It can not only
save material, but also shorten construction period, enhance efficiency and decrease labor intensity. The self drilling anchor with high-
intensity has higher safety factor.
Self drilling anchor is used for advance support in tunnel, instead of traditional pipe shed. Traditional pipe shed and ductule has steel
tube with grouting hole, casing pipe is needed and then grout. While self drilling anchor can realize drilling and grouting working at the
same time, which will save time about forty percent.
Self drilling anchor bolts can be used for support roadbed for railway and highway. And micro pile roadbed can increase the lifetime of
project.
Some of the more common uses for rock anchor bolts are to provide tiebacks for bridges, to increase stability of walls, slopes, and dams,
to secure surface in mines and tunnels or to secure structures against forces from wind or vibrating machinery.Sinorock has years of
experience in the installation, grouting, and tensioning of rock anchors of any length or load capacity.