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Technique

Self-Drilling Anchors

Self-Drilling Anchors (SDA) are a type of ground anchor used in geotechnical engineering to provide temporary or permanent support for excavations, retaining structures, and slope stabilization. They are installed by simultaneously drilling and grouting, allowing rapid installation in a wide range of soil and weak rock conditions.

  • Soil Nails
  • Self-Drilling Anchors
  • Stressed Anchors
  • Rock Bolts
  • Strand Anchors
  • Auger Drilling
  • Rotary Drilling
  • Percussion Drilling
  • Jet Drilling
  • Diamond Drilling
  • Walkover Survey
  • Test Holes
  • Surveys
  • Soil Material Recovery
  • Logging and Profiling
  • Laboratory Testing
  • In-situ Tests
  • Geophysical Methods
  • Desk Study
  • Contiguous Pile Wall
  • Mixed-in-place Slurry Wall (MIPW)
  • Secant Pile Wall
  • Soldier Pile Wall
  • Sheet Pile Wall
  • Mechanically Stabilize Earth Wall (MSE)
  • Displacement Piling
  • Driven Cast In-Situ Piles (DCIS)
  • Open Hole Auger Piling
  • Cased Auger Piling
  • Limited Access Piling
  • Micro Piling
  • Odex / Symmetrix Piling
  • Oscillator Piling
  • Driven Precast Piling
  • Percussion Piling
  • Underpinning
  • Marine Piling
  • Tubular Piling
  • Sheet Piling
  • Post Ramming
  • Ductile Iron Piles
  • Rota Piles (DTH Air Driven Hammer)
  • Spot Bolting
  • Deep Foundations
  • Lateral Support
  • Geotechnical Investigations
  • Slope Stability
  • Retaining Structures
  • Tunnels
  • Materials
  • Soil Improvement
  • NHBRC Certification – Foundation
  • Site verification and process control
  • Rockfall Mitigation Systems
  • Erosion Protection
  • Gabion Walls
  • Landslide Mitigation Systems
  • Dynamic Compaction
  • Consolidation Grouting
  • Compaction Grouting
  • Jet Grouting
  • Soil Mixing
  • Rigid Inclusions
  • Stone Columns
  • Vibro Compaction
  • Impact Compaction
  • Dry-Mix Applications
  • Wet-Mix Applications
  • Dynamic Load Testing
  • Integrity Testing
  • Pull-out Testing
  • Static Load testing

Self-Drilling Anchors

technique

Self-Drilling Anchors (SDA) are a type of ground anchor used in geotechnical engineering to provide temporary or permanent support for excavations, retaining structures, and slope stabilization. They are installed by simultaneously drilling and grouting, allowing rapid installation in a wide range of soil and weak rock conditions.

Where this technique is applied

  • Retaining Structures
  • Excavation Support
  • Bridge and road works

Specialist equipment

Man-Cage baskets or suspended platforms;

Hydraulic rock drills;

Pneaumatic rock drills;

Recent projects

Drilling
Testing & Analysis

Franschhoek Pass

Geotechnical slope stabilisation works along Franschhoek Pass (R45) at km 28.1–28.2 to repair flood-damaged sections of the roadway and stabilise the adjacent embankment.
View this project
Franschhoek pass b01 010 drilling

Recent projects

Drilling
Testing & Analysis

Bloemendal to Piet Retief

Slope stabilisation works at the substation site, including installation of rock bolts, galvanised wire mesh, and shotcrete to stabilise steep rock slopes. Drainage measures are incorporated to manage groundwater and prevent erosion.
View this project
P047 bloemendal piet retief b01 002 drill rig site wide

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