What is the difference between cartridge anchor, hollow grouting anchor and mortar anchor used in tunnel construction? Locking foot anchor rod and anchor pipe

Anchor rod is a general term, and locking anchor pipe is one of them.

In fact, the foot-locking anchor ensures that the upper guide steel frame has self-supporting ability when the tunnel is excavated by step method, and when the tunnel is excavated by middle guide or lower guide. If it is used as a radial lock foot, it will bear shear force and cannot provide the greatest help. It should be applied downward as far as possible, which is closer to the axial force.

Bolt, English "bolt"; "bolting" "Bolt (early name)" is the most basic part of roadway support in contemporary coal mines. It strengthens the surrounding rock of roadway and makes the surrounding rock stand on its own feet. At present, anchor rods are not only used in mines, but also in the engineering technology of strengthening slopes, tunnels and dams.