Hollow Grout Rock Bolt is a kind of thin rod body that goes deep into the rock and soil and controls the deformation of the rock and soil. It usually includes parts such as the backing plate and the nut. One end is connected with the engineering structure, and the other end is deep into the stratum. The whole bolt is divided into free section and anchoring section. The free section refers to the tension at the bolt head is transmitted to the anchor solid area, and its function is to apply prestress to the bolt. The anchoring section refers to the area where the cement slurry binds the prestressed reinforcement to the soil layer. Its function is to increase the bonding friction between the anchor solid and the soil layer, increase the bearing effect of the anchor solid, and transfer the tension of the free section to the depth of the soil.
Post time: Jul-14-2026