ABSTRACT
Soil nailing and subsurface drainage are amongst the very commonly used techniques for slope stabilization. The concept of soil nailing involves creating a stable block of composite material by strengthening the insitu ground with soil nails. The soil nailing technique was developed in the early 1960s, partly from the techniques for rock bolting and multi-anchorage systems, and partly from reinforced fill technique. Soil-nail heads used in slope stabilization works in Hong Kong are usually in the form of isolated reinforced concrete pads. In active deep landslides, slope movement may well be due to intense plastic strains, occurring in some regions of the subsoil where shear stresses are close to the failure envelope of the soil. Soil nailing is a robust slope stabilization measures and is generally applied to stabilize man-made slopes, retaining walls or excavations. The interaction between the ground and the soil nails is complex.
