Slope Reinforcement and Stabilization Using Percussion Driven Earth Anchors-PPT Presentation

PPT Presentation

Pdf Summary

The presentation describes percussion-driven earth anchors (PDEAs) for slope stabilization, tie-backs, and tie-downs. Anchors extend beyond potential failure planes to improve pullout resistance and secure coverings, structures, and floating or buoyant systems. Applications include road and shoreline rehabilitation, levees, gabion and gravity walls, erosion-control systems, culverts, stormwater channels, and environmentally sensitive or access-limited sites.<br /><br />The Terra-Lock system uses corrosion-resistant anchor bodies, interchangeable tendons and locking components, load-bearing plates, and portable percussion installation tools. The presenter highlights rapid installation, reduced excavation, compatibility with varied soils and surface coverings, and potential environmental benefits such as lower transport needs, vegetation growth, and reduced sediment loss. Anchor depth and size should account for soil conditions; cohesive soils may require deeper embedment or larger anchors.<br /><br />A slope-stability exercise compares systems on a steep sand slope under rapid drawdown. The reported factor of safety (FS) is 0.68 for a bare slope, 0.70 with a bio blanket or turf-reinforcement mat, and 0.83 with an articulated concrete block (ACB) mat. Adding PDEAs raises the reported FS to 1.16 with a bio blanket, 1.23 with a turf-reinforcement mat, and 1.30 with an ACB mat. The presentation attributes the improvement to anchors crossing failure planes and helping restrain soil movement; permanent coverings may provide longer-term durability.<br /><br />Overall, PDEAs are presented as a supporting geotechnical component that can enhance the stability and resilience of erosion-control and slope-protection systems, particularly where tensile reinforcement and efficient installation are priorities.

Keywords

percussion-driven earth anchors

PDEA

slope stabilization

pullout resistance

rapid drawdown

erosion control

Terra-Lock system

geotechnical anchors

factor of safety

shoreline rehabilitation