What are the benefits of hollow anchor rods compared to regular anchor rods? The differences and advantages of hollow anchor rods over regular anchor rods are as follows in 5 points!

1. Hollow grouting anchor bars save additional exhaust and grouting pipes, achieving drilling, grouting, and anchoring integration. The construction method is simple and safe, reducing labor costs.

2. The unique hollow rod body and plug of anchor rods slowly inject grout, exhaust air, and increase pressure from the inside out, injecting the pressure grout into the fractures of the rock mass, thereby solidifying the rock and enhancing the strength of the surrounding rock.

3. Hollow grouted anchor bolts can bear greater bending moments and shearing forces compared to ordinary cement mortar bolts with the same cross-section. The grout fully encases the bolt, resulting in a stronger bonding force with the surrounding rock on the outside.

4. Self-compacting, prestressed, and hollow grouting anchor rods can apply prestress to the surrounding rock, effectively halting the improvement of surrounding rock strength due to unloading.

5. The hollow grouting anchor rod combined with shotcrete support system offers a more effective transition between rigidity and flexibility, maximizing the support and consolidation effects of the anchor shotcrete system on the rock, thereby significantly reducing the project's construction cost.