Threaded Anchor Self Drilling Anchor Bolts Hollow Anchor Bar

Through the longitudinal tension of the bolts body, the shortcoming that the tensile capacity of rock and soil is far lower than the compressive capacity is overcome.

On the surface, Hollow Anchor Bar seems to limit the separation of rock and soil from the original body.

Macroscopically, Hollow Anchor Rod increases the cohesion of rock and soil mass.

From a mechanical point of view, it mainly improves the cohesion C and internal friction angle φ of the surrounding rock mass.

In essence, the anchor bolt is located in the rock-soil body and forms a new complex with the rock-soil body.

The bolts in this complex are the key to solving the low tensile capacity of the surrounding rock mass.

• Anchor rods are not only used in mines, but also in engineering technology for active reinforcement of slopes, tunnels, dams, etc.