A critical section of the A13 highway through the Swiss Alps has been reinforced using advanced soil nail technology from SupAnchor. The project, located near the Gotthard massif, faced significant geotechnical challenges due to fractured rock and high groundwater pressure. Engineers selected the SupAnchor self drilling anchor bolt system to provide immediate support and long-term corrosion resistance.
The self drilling anchor system used on this site comprises 32mm diameter hollow bar anchors in lengths of 9 to 12 meters. Each anchor achieves a minimum tensile strength of 670 MPa and is protected by a hot-dip galvanized coating plus an optional epoxy layer for aggressive environments. The drill-and-grout technique allowed simultaneous drilling and grouting in a single pass, reducing installation time by 40% compared to conventional methods.
Key parameters of the SupAnchor system include:
| Parameter | Value |
|---|---|
| Diameter | 32 mm |
| Tensile Strength | 670 MPa |
| Length | 9–12 m |
| Corrosion Protection | Hot-dip galvanized + epoxy |
| Installation Method | Drill-and-grout, single pass |
On-site, the geotechnical reinforcement system was deployed on a 400-meter stretch of cut slope with inclinations up to 70 degrees. The hollow bar anchor design allowed efficient dewatering during grouting, preventing hydrostatic pressure buildup. Multiple rows of anchors were installed at 2.5-meter spacing, creating a composite stabilized mass.
This project exemplifies the growing reliance on self drilling anchor systems in civil engineering. With aging infrastructure and expanding transportation networks, ground stabilization anchor systems are vital for safe construction in difficult terrains. The use of a soil nail system manufacturer like SupAnchor ensures consistent quality and adherence to international standards such as ISO 9001 and EN 1997-1.
Rock bolt for underground mining applications similarly benefit from the same technology, but here the focus is on surface slope stability. The self drilling anchor for retaining walls offers a versatile solution for permanent and temporary works. As a ground anchor bolt factory with direct supply capabilities, SupAnchor delivers cost-effective solutions without compromising safety.
SupAnchor has established itself as a leader in the field through continuous innovation and collaboration with engineering firms worldwide. The company’s SDA bolt factory direct supply model ensures traceability and shorter lead times. From micropile hollow bar anchor systems to large-diameter ground anchors, SupAnchor supports projects that prioritize safety and durability.
The success of the Alpine highway project underscores the importance of selecting the right anchor bolt system for geotechnical engineering. SupAnchor’s self drilling bolt for civil engineering applications provides the reliability needed for challenging environments. As the industry moves toward more sustainable construction methods, the drill-and-grout bolt reduces material waste and environmental disturbance.
For more information on SupAnchor’s product range and technical support, visit the official website at https://www.supanchor.com/.
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