1 , hollow grouting anchor suspension features: hollow bolt grouting through the soft, loose, unstable rock, anchored in deeper, more stable rock, providing sufficient tension to overcome the weight and power sliding , Sliding rocks and soil to prevent sliding and collapse of tunnel walls.

2. Strengthen compression: After applying force to the hollow grouting anchor rod , a compression zone is formed in a certain range around it. The hollow grouting anchor rods are appropriately placed so that the compression area formed by the adjacent hollow grouting anchor rods or overlap each other to form a compression area. The hollow grouting bolt strengthens the loose ground in the compacted area and improves the integrity and bearing capacity.

3. Composite beam (arch) effect: After the hollow grouting anchor rod is inserted into the formation at a certain depth, the formation is squeezed against each other under the action of the anchoring force, the frictional resistance between the layers increases, and the internal stress and deflection increase. The bending is greatly reduced. This is equivalent to converting a simple laminated beam (arch) into a composite beam (arch). Significantly improve the bending stiffness and strength of the composite beam (arch), and improve the bearing capacity of the ground. The greater the anchoring force provided by the hollow grouting bolt , the more obvious the effect.

4 , bolt grouting hollow length: depending on design requirements, the hollow bolt grouting only after total length to play an effective role. It is the sum of anchorage length, steel bar length and exposed length. According to the calculation of the composite beam (arch), the height of the composite beam (arch) is the sum of 1.2 times the exposure length. When using actual values, other lengths due to uneven cut contours should also be considered.

5 , bolt grouting hollow fixed length: The length of the stabilizer anchored in the formation of hollow bolt grouting, can be selected empirically or calculated. Based on experience, the anchoring method and the diameter of the hollow grouting bolt should be considered when selecting. According to the calculation selection, the matching force between the mortar and the hollow grouting bolt and between the mortar and the hole wall must be considered.

6 , bolt grouting hollow reinforcement length: height of the suspended load based on the direction of the hollow bolt grouting of rock or rock, or through the bulk region thickness measured acoustic testing technology.

Luoyang Xinben Machinery Equipment Co., Ltd. is located in the High-tech Zone, Luoyang City, Henan Province, with a superior geographical location and convenient transportation. Founded in 2005, the company specializes in R&D, manufacturing and sales of supporting materials, mining materials and equipment. It has strong research and production capabilities, various sales channels, and excellent after-sales services. Customers in need are welcome to consult.