Due to the continuous progress and development of hollow grouting bolt products, the application is becoming more and more extensive, and the product output has also increased significantly. So how can the hollow grouting anchor show its application value when it is used? Let me give you a brief introduction.

1. Hollow grouting anchor rods usually do not install backing plates and nuts, but sometimes only backing plates are installed. Since the nut without thread can not provide supporting force behind the hollow grouting anchor rod device, the effect of the anchor rod is completely passive Form, the anchor rod only comes into play when the rock mass moves.

2. Hollow grouting anchor rods always use the process of grouting first and then inserting the ribs. Repair factors have a great influence on the fullness of the grouting. Especially when the construction is inclined upward or the length of the drag anchor is greater than 3.0 meters, the full level of grouting is more difficult to smear. The useful anchoring area that often led to practice was far from the design requirements, but there was a lack of useful methods to check the fullness of the mortar. The pull-out test of the anchor rod cannot determine whether this full-length cemented bolt can meet the design requirements. Because the mortar is filled only if the length is more than 25 to 35 times smaller than the bolt diameter, under the effect of the ultimate load, there will always be steel bars showing necking and destruction. As a result, the hollow grouting bolts that were widely used at that time left a certain hidden danger, but this hidden danger was not easy to be discovered by people.

3. Because the fullness of the mortar of the hollow grouting bolt is difficult to control. It is often difficult to prevent the pores, cavities, and steel bars in the borehole from being exposed. Some groundwater contains corrosive media, which will cause the corrosion of the main body of the steel bar and seriously affect the durability of the bolt.

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.