
In the demanding landscapes of modern infrastructure, from tunneling through soft rock in Europe to stabilizing slopes in North America, engineers grapple with complex geological challenges that threaten project timelines and safety. The SupAnchor® GFRP SDA Bolt emerges as a groundbreaking solution, offering a seamless integration of drilling, grouting, and anchoring in a single system. This innovative product, part of SupAnchor's advanced geotechnical reinforcement system, is designed to enhance stability and accelerate construction in environments prone to instability, such as soft rock and clay soil. By addressing critical needs in face stabilization and slope support, this self drilling anchor bolt represents a significant leap forward in engineering adaptability and safety protocols.
The SupAnchor GFRP SDA Bolt operates on a drill-and-grout bolt principle, where its central hole allows for water flushing during drilling and subsequent anchor grouting, ensuring rapid installation and robust reinforcement. Key technical features include permanent application, super high torque resistance, high end loading, and easy handling, making it ideal for harsh conditions. To illustrate its capabilities, here are essential parameters from the product line, which highlight how this hollow bar anchor tackles engineering challenges:
| Model | Outside Diameter (mm) | Internal Diameter (mm) | Guaranteed Tensile Load (kN) | Torsion Strength (Nm) | Weight (kg/m) | Length Options (m) |
|---|---|---|---|---|---|---|
| H25S | 25 | 12 | 220 | 180 | 0.63 | 2-11 |
| H28S | 28 | 14 | 280 | 250 | 0.86 | 2-11 |
| H32S | 32 | 15 | 365 | 360 | 0.99 | 2-11 |
| H38S | 38 | 20 | 490 | 450 | 1.33 | 2-11 |
These specs, such as the high tensile load and torsion strength, directly address issues like ground movement and machinery protection during tunnel drifting. For instance, the cuttability feature prevents obstructions, while the ISO standard thread profile ensures compatibility and durability. By reducing installation time and enhancing load-bearing capacity, this self drilling anchor system minimizes risks in projects involving unstable soils and rocks.
The versatility of the SupAnchor GFRP SDA Bolt makes it a cornerstone in various geotechnical applications. Key scenarios include:
European and American projects, such as highway expansions and urban tunnel networks, have adopted this technology to overcome geological hurdles. The self drilling anchor bolt's efficiency in drill-and-grout processes reduces labor costs and environmental impact, aligning with sustainable construction practices.
The introduction of the SupAnchor GFRP SDA Bolt holds significant value for the global infrastructure sector. As urbanization and mining activities expand, the demand for reliable ground anchor bolt solutions grows. This product enhances geotechnical safety by:
In regions like Europe, where aging infrastructure requires upgrades, and the Americas, with extensive mining operations, this hollow bar anchor system offers a scalable solution. It contributes to economic resilience by enabling safer and more cost-effective construction, fostering innovation in geotechnical engineering worldwide.
SupAnchor, as a leading soil nail system manufacturer and ground anchor bolt factory, demonstrates its dedication through continuous R&D and innovation. The GFRP SDA Bolt reflects this ethos, with features developed from collaborative engineering insights and field testing. Key brand aspects include:
SupAnchor's global projects, from tunneling in Asia to slope stabilization in South America, highlight its influence and commitment to enhancing infrastructure safety. The company's focus on quality control and customer support ensures that this self drilling anchor system meets the highest industry benchmarks.
In conclusion, the SupAnchor® GFRP SDA Bolt stands as a testament to innovation in geotechnical reinforcement, offering a robust, efficient, and adaptable solution for modern construction challenges. Its role in advancing safety and efficiency underscores SupAnchor's position as a key player in the global market.

A large-scale tunnel project in Europe utilizes SupAnchor's self-drilling anchor bolts to overcome complex geology, improving infrastructure safety and efficiency.
SupAnchor introduces the GFRP SDA Bolt, an innovative self drilling anchor system that integrates drilling, grouting, and anchoring for fast installation in soft rock and clay soil, improving safety and efficiency in global infrastructure projects.
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