Anchor bolt support(1)

Anchor Bolt support

Anchor bolt support is a reinforcement support method used in surface engineering such as slope, deep foundation pit of rock and soil,

underground chamber construction such as tunnel and stope.Using metal parts, wood parts, polymer parts or other materials to make poles.Then drive them into the pre-drilled holes in the surface rock mass or the rock mass around the chamber.Using the special structure of its head and bar body and the tail supporting plate (or not), or relying on the bonding effect, the surrounding rock and stable rock are combined together to produce suspension effect, composite beam effect and reinforcing effect, so as to achieve the purpose of support.It has the advantages of low cost, good supporting effect, simple operation, flexible use, and less construction clearance.

Basic situation

Anchor bolt support changes the mechanical state of the surrounding rock itself through the internal bolt of the surrounding rock, forming a whole and stable rock belt around the roadway, and using the joint action of the bolt and the surrounding rock to achieve the purpose of maintaining the stability of the roadway.

The mechanical effects of anchor rods mainly include suspension, composite beam, composite arch, span reduction, and reinforcement.

The anchor rod not only has good supporting effect, but also saves material.It is simple in construction,

and conducive to mechanized operation, and the construction speed is fast. However, the anchor rod can not close the surrounding rock, prevent surrounding rock weathering; Can not prevent the spalling of rock cracks between the bolts.