Sinorock self drilling anchor used for supporting global projects

Recent years, self drilling anchor is a new method for supporting global projects, which
has been applied in several projects, such as civil construction, mining, hydroelectric
station and tunneling.Self drilling anchor bolt can not only make construction more
convenient and efficient, but also have effect for permanent supporting. Stainless self
drilling anchor bolt and duplex coating rock bolt are all the anti-corrosion products in
Sinorock. They have not only beautiful appearance, anti-corrosion quality, but also good
strength and high wear resistance.
Self drilling anchor was arranged symmetrically and drill machines helped to drill holes.
The distance between anchor
bolts was 1 meter.Before tunnel construction, analogous calculation and analysis were
carried out, such as geological conditions, choice of parameters, digital simulation,
supporting effect with ANSYS, stability of surrounding rocks, etc.Then the steps of
construction were as follow: drill holes, insert self drilling anchor bolt, grout slurry and
lock steel arch.During the construction of railway tunnel, self drilling anchor has reaction
with surrounding rocks, which depended not only on terrain conditions, but also on self
drilling anchor’s support effect.In weak conditions, self drilling anchor has better
reinforcement effect than common bolt.
Self drilling anchor can change the mechanical property of surrounding rocks, enhance self- supporting capacity, reduce deformation of surrounding rocks and then keep tunnel’s stability.