In today’s infrastructure and underground construction projects, ground conditions are rarely ideal. Loose soils, fractured rock, and high groundwater levels can complicate anchoring operations and delay timelines. The self-drilling anchor system (SDA) offers a smart, integrated solution—combining drilling, grouting, and anchoring into a single, efficient process.
A self-drilling anchor system consists of a hollow threaded steel bar with a sacrificial drill bit. During installation, the bar is rotated into the ground while grout is pumped through its core, bonding the anchor to the surrounding material. This eliminates the need for pre-drilling or casing, making it ideal for unstable or collapsing ground.
Hollow Anchor Rod: Serves as both drill rod and anchor
Drill Bit: Penetrates the ground and remains embedded
Couplers: Extend the system for deeper installations
Bearing Plate & Nut: Provide surface support and tensioning
Grouting System: Ensures full encapsulation and load transfer
Single-Step Installation: Drill, grout, and anchor in one operation
No Pre-Drilling Required: Ideal for soft, loose, or saturated soils
High Load Capacity: Grouted anchors provide excellent bond strength
Versatile: Performs in a wide range of geological conditions
Efficient: Reduces labor, equipment, and installation time
Tunnel face stabilization
Slope and embankment reinforcement
Soil nailing and retaining walls
Foundation underpinning and micropiles
Mining drift and shaft support
Ground improvement and seismic retrofitting
: Offers a complete SDA portfolio with R-type and T-type threads, dynamic bolt options, and accessories for tunneling, mining, and civil works
: Specializes in API-standard hollow bars, patented couplings, and drill bits engineered for global geological conditions
: A China-based manufacturer with over a decade of experience in SDA systems, offering customizable solutions for complex formations
The self-drilling anchor system is more than a product—it’s a strategic solution for modern geotechnical challenges. With its ability to perform in the most difficult ground conditions, SDA technology empowers engineers to build faster, safer, and smarter—one anchor at a time.