Ordinary hollow anchor rods are tie rods that transfer anchor structures or rock and soil loads to stable formations. The hollow rod body applies pressure to the anchor rod to break it, so as to cut off the groundwater and the rod body to prevent corrosion, quickly form a bearing capacity, and control the stability of the surrounding rocks. It is widely used in tunnels, mining, slope stability and underground engineering. It is suitable for anchoring loose geological structures.

The advantages of ordinary hollow bolts :

1. The hollow design realizes the function of the mainstream tube and prevents the mortar leakage that occurs when the traditional mainstream tube is pulled out.

2. The grouting is full, and pressure grouting can be realized, which can improve the quality of the project.

3. Good centering, the mortar can wrap the full length of the bolt to avoid rust and achieve the purpose of long-term support.

4. Easy to install, no need to process threads on site, you can easily install the backing plate and nut.

Defects of ordinary hollow bolt :

1. Ordinary hollow bolts do not install backing plates and nuts, only backing plates, but nuts without threaded bolts cannot provide supporting force behind the hollow bolt device, and the effect of the bolt is completely passive. Only when the rock mass moves, the anchor rod starts to be used.

2. Ordinary hollow anchor rods are always grouted first, and then the process of inserting the reinforcement. What is more special is that when the construction is inclined upward or the length of the anchor is greater than 3.0 meters, the full level of grouting is 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 for checking the abundance of mortar.

3. Because the abundance of mortar is difficult to control during hollow anchor construction. It is often difficult to prevent the pores, cavities, and rod-body steel bars in the borehole from being exposed. Groundwater in particular provides a channel for groundwater intrusion containing corrosive media. The corrosion of the main body of the steel strip seriously affects the durability of the hollow bolt.

4. Drill holes in fragile cracked rock and other bad formations. After the drill bit is pulled out, collapsed cave scenes are often exposed, resulting in a decline in the coping ability of ordinary hollow bolts .

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.